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Including CVEs outside Waratek scope✕Vendor openbsd✕
Overview 343 matches · 0 in Waratek scope · 0 protected · 9 exploited · 2 CISA KEV · 71 public PoC · 14 EPSS ≥ 0.5
343matches 0in Waratek scope0.0% 0protected0.0% 9exploited2.6% 2CISA KEV0.6% 71public PoC20.7% 14EPSS ≥ 0.54.1%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 343 100.0% Withdrawn CVE 0 0.0%
Critical 20 5.8% High 142 41.4% Medium 149 43.4% Low 32 9.3% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 343 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 9 2.6% Working exploit published 57 16.6% Proof of concept only 8 2.3% Forecast only 2 0.6% No public exploit 267 77.8%
split by peak 34 / year
Not applicable: 343 Low: 32Medium: 149High: 142Critical: 20 not blocked: 343 No public exploit: 267Forecast only: 2Proof of concept only: 8Working exploit published: 57Exploited: 9
19973 Not applicable3 Medium2 Low1 not blocked3 No public exploit3 19987 Not applicable7 High5 Medium2 not blocked7 No public exploit7 199913 Not applicable13 High1 Medium5 Low7 not blocked13 Working exploit published2 No public exploit11 200018 Not applicable18 High10 Medium8 not blocked18 Working exploit published6 No public exploit12 200130 Not applicable30 High17 Medium9 Low4 not blocked30 Exploited1 Working exploit published7 No public exploit22 200225 Not applicable25 Critical3 High10 Medium9 Low3 not blocked25 Working exploit published6 Forecast only1 No public exploit18 200318 Not applicable18 Critical1 High11 Medium5 Low1 not blocked18 Exploited1 Working exploit published6 No public exploit11 200433 Not applicable33 High16 Medium16 Low1 not blocked33 Exploited1 Working exploit published5 No public exploit27 20057 Not applicable7 Medium6 Low1 not blocked7 No public exploit7 200617 Not applicable17 High5 Medium11 Low1 not blocked17 Working exploit published3 Proof of concept only1 No public exploit13 200710 Not applicable10 High4 Medium5 Low1 not blocked10 Exploited1 Working exploit published3 No public exploit6 200815 Not applicable15 High6 Medium7 Low2 not blocked15 Working exploit published5 Proof of concept only2 No public exploit8 20096 Not applicable6 High1 Medium5 not blocked6 Working exploit published3 No public exploit3 20101 Not applicable1 Critical1 not blocked1 No public exploit1 20117 Not applicable7 High3 Medium4 not blocked7 Working exploit published1 No public exploit6 20122 Not applicable2 Medium1 Low1 not blocked2 No public exploit2 20132 Not applicable2 High1 Medium1 not blocked2 No public exploit2 20147 Not applicable7 High2 Medium5 not blocked7 No public exploit7 20155 Not applicable5 High3 Medium2 not blocked5 Working exploit published1 No public exploit4 20167 Not applicable7 High4 Medium3 not blocked7 Working exploit published2 Proof of concept only1 Forecast only1 No public exploit3 201722 Not applicable22 Critical3 High7 Medium12 not blocked22 Working exploit published5 No public exploit17 20183 Not applicable3 High1 Medium2 not blocked3 No public exploit3 201910 Not applicable10 Critical2 High7 Medium1 not blocked10 Exploited1 Working exploit published1 No public exploit8 20206 Not applicable6 Critical3 High3 not blocked6 Exploited1 Working exploit published1 No public exploit4 20216 Not applicable6 High4 Medium2 not blocked6 No public exploit6 20223 Not applicable3 High2 Low1 not blocked3 No public exploit3 202312 Not applicable12 Critical4 High3 Medium5 not blocked12 Exploited1 Proof of concept only2 No public exploit9 202411 Not applicable11 Critical2 High4 Medium4 Low1 not blocked11 Exploited1 No public exploit10 20253 Not applicable3 High1 Medium2 not blocked3 Proof of concept only1 No public exploit2 202634 Not applicable34 Critical1 High11 Medium15 Low7 not blocked34 Exploited1 Proof of concept only1 No public exploit32
1999200220052008201120142017202020232026
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CVE Severity Published▾ Status Exploitation Description
CVE-2026-123158 High 2026-11-05 Not applicable Exploited sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256 and 1024 characters succeeds. An example of a platform using musl libc without PAM is Alpine Linux.
CVE-2026-106583 High 2026-10-07 Not applicable No public exploit In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.
CVE-2026-106587 Low 2026-10-06 Not applicable No public exploit In sshd in OpenSSH before 10.6, the value "none" for a configuration option is sometimes interpreted as a filename but was intended to mean that a feature is disabled.
CVE-2026-106586 Medium 2026-10-06 Not applicable No public exploit In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.
CVE-2026-106585 Medium 2026-10-06 Not applicable No public exploit In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data.
CVE-2026-106584 Low 2026-10-06 Not applicable No public exploit In ssh-keygen in OpenSSH before 10.6, certificates could have incorrect expiration times because of Daylight Saving mishandling. There can be a slightly more severe effect on users in certain Antarctic locations.
CVE-2026-106582 Low 2026-10-06 Not applicable No public exploit In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.
CVE-2026-106555 High 2026-10-06 Not applicable No public exploit In sshd in OpenSSH before 10.6, GSSAPIAuthentication authentication state can incorrectly be persisted across authentication attempts.
CVE-2026-106553 High 2026-10-06 Not applicable No public exploit In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.
CVE-2026-106552 Medium 2026-10-06 Not applicable No public exploit In sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recursive copy operation.
CVE-2026-73283 Low 2026-08-11 Not applicable No public exploit In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
CVE-2026-73282 Medium 2026-08-11 Not applicable No public exploit In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
CVE-2026-73281 Low 2026-08-11 Not applicable No public exploit In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.
CVE-2026-60002 Critical 2026-07-08 Not applicable No public exploit ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
CVE-2026-60001 Medium 2026-07-08 Not applicable No public exploit sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.
CVE-2026-60000 High 2026-07-08 Not applicable No public exploit sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication.
CVE-2026-59999 High 2026-07-08 Not applicable No public exploit In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
CVE-2026-59998 Medium 2026-07-08 Not applicable No public exploit sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.
CVE-2026-59997 Medium 2026-07-08 Not applicable No public exploit internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.
CVE-2026-59996 Medium 2026-07-08 Not applicable No public exploit scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.
CVE-2026-59995 Medium 2026-07-08 Not applicable No public exploit sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.
CVE-2026-57589 High 2026-06-25 Not applicable No public exploit sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. This is a context switch use-after-free after tsleep in sys_semget().
CVE-2026-55655 Medium 2026-06-23 Not applicable No public exploit A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.
CVE-2026-55654 Low 2026-06-23 Not applicable No public exploit A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.
CVE-2026-55653 Medium 2026-06-23 Not applicable No public exploit A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
CVE-2026-56099 Medium 2026-06-18 Not applicable No public exploit OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set.
CVE-2026-55706 High 2026-06-17 Not applicable Proof of concept only sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
CVE-2026-41285 Medium 2026-04-21 Not applicable No public exploit In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor Discovery (ND) option (over a local network) with length zero, because of an "nd_opt_len * 8 - 2" expression with no preceding check for whether nd_opt_len is zero.
CVE-2026-35414 High 2026-04-02 Not applicable No public exploit OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
CVE-2026-35388 Low 2026-04-02 Not applicable No public exploit OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
CVE-2026-35387 Medium 2026-04-02 Not applicable No public exploit OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
CVE-2026-35386 High 2026-04-02 Not applicable No public exploit In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
CVE-2026-35385 High 2026-04-02 Not applicable No public exploit In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).
CVE-2026-3497 Medium 2026-03-12 Not applicable No public exploit Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminate the process. The impact of the vulnerability depends heavily on the compiler flag hardening configuration.
CVE-2025-32728 Medium 2025-04-10 Not applicable No public exploit In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding.
CVE-2025-30334 High 2025-03-20 Not applicable No public exploit In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.
CVE-2025-26466 Medium 2025-02-28 Not applicable Proof of concept only A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.
CVE-2024-11149 Medium 2024-12-06 Not applicable No public exploit In OpenBSD 7.4 before errata 014, vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs.
CVE-2024-11148 High 2024-12-05 Not applicable No public exploit In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd(8) is vulnerable to a NULL dereference when handling a malformed fastcgi request.
CVE-2024-10933 Medium 2024-12-05 Not applicable No public exploit In OpenBSD 7.5 before errata 009 and OpenBSD 7.4 before errata 022, exclude any '/' in readdir name validation to avoid unexpected directory traversal on untrusted file systems.
CVE-2024-10934 Critical 2024-11-15 Not applicable No public exploit In OpenBSD 7.5 before errata 008 and OpenBSD 7.4 before errata 021, avoid possible mbuf double free in NFS client and server implementation, do not use uninitialized variable in error handling of NFS server.
CVE-2024-6387 High 2024-07-01 Not applicable Exploited A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
CVE-2021-35000 Low 2024-05-07 Not applicable No public exploit OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel. . Was ZDI-CAN-16112.
CVE-2021-34999 Medium 2024-05-07 Not applicable No public exploit OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel. . Was ZDI-CAN-14540.
CVE-2024-29937 Critical 2024-04-11 Not applicable No public exploit NFS in a BSD derived codebase, as used in OpenBSD through 7.4 and FreeBSD through 14.0-RELEASE, allows remote attackers to execute arbitrary code via a bug that is unrelated to memory corruption.
CVE-2023-52558 High 2024-03-01 Not applicable No public exploit In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.
CVE-2023-52557 High 2024-03-01 Not applicable No public exploit In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.
CVE-2023-52556 Medium 2024-03-01 Not applicable No public exploit In OpenBSD 7.4 before errata 009, a race condition between pf(4)'s processing of packets and expiration of packet states may cause a kernel panic.
CVE-2023-51767 High 2023-12-24 Not applicable No public exploit OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states "we do not consider it to be the application's responsibility to defend against platform architectural weaknesses."
CVE-2023-51385 Medium 2023-12-18 Not applicable Proof of concept only In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.
CVE-2023-51384 Medium 2023-12-18 Not applicable No public exploit In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.
CVE-2023-40216 Medium 2023-08-10 Not applicable No public exploit OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation. This could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.
CVE-2023-38408 Critical 2023-07-20 Not applicable Exploited The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an incomplete fix for CVE-2016-10009.
CVE-2023-35784 Critical 2023-06-16 Not applicable No public exploit A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.
CVE-2021-46880 Critical 2023-04-15 Not applicable No public exploit x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes discarded.
CVE-2022-48437 Medium 2023-04-12 Not applicable No public exploit An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001. x509_verify_ctx_add_chain does not store errors that occur during leaf certificate verification, and therefore an incorrect error is returned. This behavior occurs when there is an installed verification callback that instructs the verifier to continue upon detecting an invalid certificate.
CVE-2023-29323 High 2023-04-04 Not applicable No public exploit ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable before 7.0.0-portable commit f748277, can abort upon a connection from a local, scoped IPv6 address.
CVE-2023-28531 Critical 2023-03-17 Not applicable No public exploit ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.
CVE-2023-27567 High 2023-03-03 Not applicable No public exploit In OpenBSD 7.2, a TCP packet with destination port 0 that matches a pf divert-to rule can crash the kernel.
CVE-2023-25136 Medium 2023-02-03 Not applicable Proof of concept only OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
CVE-2022-27882 High 2022-03-25 Not applicable No public exploit slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.
CVE-2022-27881 High 2022-03-25 Not applicable No public exploit engine.c in slaacd in OpenBSD 6.9 and 7.0 before 2022-02-21 has a buffer overflow triggerable by an IPv6 router advertisement with more than seven nameservers. NOTE: privilege separation and pledge can prevent exploitation.
CVE-2021-36368 Low 2022-03-13 Not applicable No public exploit An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is "this is not an authentication bypass, since nothing is being bypassed.
CVE-2021-41581 Medium 2021-09-24 Not applicable No public exploit x509_constraints_parse_mailbox in lib/libcrypto/x509/x509_constraints.c in LibreSSL through 3.4.0 has a stack-based buffer over-read. When the input exceeds DOMAIN_PART_MAX_LEN, the buffer lacks '\0' termination.
CVE-2019-25049 High 2021-07-01 Not applicable No public exploit LibreSSL 2.9.1 through 3.2.1 has an out-of-bounds read in asn1_item_print_ctx (called from asn1_template_print_ctx).
CVE-2019-25048 High 2021-07-01 Not applicable No public exploit LibreSSL 2.9.1 through 3.2.1 has a heap-based buffer over-read in do_print_ex (called from asn1_item_print_ctx and ASN1_item_print).
CVE-2010-4816 High 2021-06-22 Not applicable No public exploit It was found in FreeBSD 8.0, 6.3 and 4.9, and OpenBSD 4.6 that a null pointer dereference in ftpd/popen.c may lead to remote denial of service of the ftpd service.
CVE-2020-26142 Medium 2021-05-11 Not applicable No public exploit An issue was discovered in the kernel in OpenBSD 6.6. The WEP, WPA, WPA2, and WPA3 implementations treat fragmented frames as full frames. An adversary can abuse this to inject arbitrary network packets, independent of the network configuration.
CVE-2021-28041 High 2021-03-05 Not applicable No public exploit ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
CVE-2020-16088 Critical 2020-07-28 Not applicable No public exploit iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.
CVE-2020-12062 High 2020-06-01 Not applicable No public exploit The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.
CVE-2011-3336 High 2020-02-12 Not applicable Working exploit published regcomp in the BSD implementation of libc is vulnerable to denial of service due to stack exhaustion.
CVE-2020-7247 Critical 2020-01-29 Not applicable Exploited smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.
CVE-2015-5334 Critical 2020-01-23 Not applicable No public exploit Off-by-one error in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (program crash) or possible execute arbitrary code via a crafted X.509 certificate, which triggers a stack-based buffer overflow. Note: this vulnerability exists because of an incorrect fix for CVE-2014-3508.
CVE-2015-5333 High 2020-01-23 Not applicable No public exploit Memory leak in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates.
CVE-2012-5663 High 2019-12-30 Not applicable No public exploit The isearch package (textproc/isearch) before 1.47.01nb1 uses the tempnam() function to create insecure temporary files into a publicly-writable area (/tmp).
CVE-2019-19726 High 2019-12-12 Not applicable Working exploit published OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.
CVE-2019-14899 High 2019-12-11 Not applicable No public exploit A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point, or an adjacent user, to determine if a connected user is using a VPN, make positive inferences about the websites they are visiting, and determine the correct sequence and acknowledgement numbers in use, allowing the bad actor to inject data into the TCP stream. This provides everything that is needed for an attacker to hijack active connections inside the VPN tunnel.
CVE-2012-1577 Critical 2019-12-10 Not applicable No public exploit lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
CVE-2019-19522 High 2019-12-05 Not applicable No public exploit OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.
CVE-2019-19521 Critical 2019-12-05 Not applicable No public exploit libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).
CVE-2019-19520 High 2019-12-05 Not applicable No public exploit xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a LIBGL_DRIVERS_PATH environment variable, because xenocara/lib/mesa/src/loader/loader.c mishandles dlopen.
CVE-2019-19519 High 2019-12-05 Not applicable No public exploit In OpenBSD 6.6, local users can use the su -L option to achieve any login class (often excluding root) because there is a logic error in the main function in su/su.c.
CVE-2019-8460 High 2019-08-26 Not applicable No public exploit OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.
CVE-2019-6111 Medium 2019-01-31 Not applicable Exploited An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).
CVE-2018-14775 Medium 2018-08-01 Not applicable No public exploit tss_alloc in sys/arch/i386/i386/gdt.c in OpenBSD 6.2 and 6.3 has a Local Denial of Service (system crash) due to incorrect I/O port access control on the i386 architecture.
CVE-2018-12434 Medium 2018-06-15 Not applicable No public exploit LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
CVE-2018-8970 High 2018-03-24 Not applicable No public exploit The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.
CVE-2015-7687 Critical 2017-10-16 Not applicable No public exploit Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
CVE-2017-1000373 Medium 2017-06-19 Not applicable Working exploit published The OpenBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects OpenBSD 6.1 and possibly earlier versions.
CVE-2017-1000372 Critical 2017-06-19 Not applicable No public exploit A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.
CVE-2017-8301 Medium 2017-04-27 Not applicable No public exploit LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.
CVE-2016-1908 Critical 2017-04-11 Not applicable No public exploit The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server.
CVE-2017-5850 High 2017-03-27 Not applicable Working exploit published httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using an HTTP Range header.
CVE-2016-6522 Medium 2017-03-07 Not applicable No public exploit Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.
CVE-2016-6350 Medium 2017-03-07 Not applicable No public exploit OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path starting with 10,9.
CVE-2016-6247 Medium 2017-03-07 Not applicable No public exploit OpenBSD 5.8 and 5.9 allows certain local users to cause a denial of service (kernel panic) by unmounting a filesystem with an open vnode on the mnt_vnodelist.
CVE-2016-6246 Medium 2017-03-07 Not applicable No public exploit OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.
CVE-2016-6245 Medium 2017-03-07 Not applicable No public exploit OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a large size in a getdents system call.
CVE-2016-6244 High 2017-03-07 Not applicable No public exploit The sys_thrsigdivert function in kern/kern_sig.c in the OpenBSD kernel 5.9 allows remote attackers to cause a denial of service (panic) via a negative "ts.tv_sec" value.
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