`CVE-2021-4160` OpenSSL

Affected software	OpenSSL
Severity	5.9 Medium CVSS 3.1 2 scores
Published	28 Jan 2022
Updated	17 Jun 2026

Description

There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH private key among multiple clients, which is no longer an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc-dev (Affected 1.0.2-1.0.2zb).

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 4 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment exploitation: none
Indexed PoC none indexed
EPSS 3.8% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

Protection none
Action not pursued none
Review human Researcher
Record active

Decided by	Manual classification of this CVE in the legacy dataset
Finding	A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

Decided by

Manual classification of this CVE in the legacy dataset

Finding

A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

5.9 MEDIUM v3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N NVD Primary published

CVSS 2.0 4.3 none AV:N/AC:M/Au:N/C:P/I:N/A:N NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	5.9	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`	NVD	Primary	published
CVSS 2.0	4.3	none	`AV:N/AC:M/Au:N/C:P/I:N/A:N`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update April 2022 ↗	CPU	2022-Q2	Oracle PeopleSoft / Security (OpenSSL) (8.58, 8.59)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update April 2022 ↗

CPU

2022-Q2

Oracle PeopleSoft / Security (OpenSSL) (8.58, 8.59)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle PeopleSoft	Security (OpenSSL)	8.58, 8.59	8.58 · 8.59

Family

Component

Versions, as Oracle lists them

Read as

Oracle PeopleSoft

Security (OpenSSL)

8.58, 8.59

8.58 · 8.59

Products and versions

8 products, 35 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	debian	debian linux	generic	9.0 · 10.0 · 11.0
nvd	openssl	openssl	generic	≥ 1.0.2 and ≤ 1.0.2 · ≥ 1.1.1 and ＜ 1.1.1 · 3.0.0 · 3.0.0:alpha1 · 3.0.0:alpha10 · 3.0.0:alpha11 · 3.0.0:alpha12 · 3.0.0:alpha13 · 3.0.0:alpha14 · 3.0.0:alpha15 · 3.0.0:alpha16 · 3.0.0:alpha17 · 3.0.0:alpha2 · 3.0.0:alpha3 · 3.0.0:alpha4 · 3.0.0:alpha5 · 3.0.0:alpha6 · 3.0.0:alpha7 · 3.0.0:alpha8 · 3.0.0:alpha9 · 3.0.0:beta1 · 3.0.0:beta2
nvd	oracle	enterprise manager ops center	generic	12.4.0.0
nvd	oracle	health sciences inform publisher	generic	6.2.1.1 · 6.3.1.1
nvd	oracle	jd edwards enterpriseone tools	generic	9.2.6.3
nvd	oracle	jd edwards world security	generic	a9.4
nvd	oracle	peoplesoft enterprise peopletools	generic	8.58 · 8.59
nvd	siemens	sinec ins	generic	1.0 · ＜ 1.0 · 1.0:sp1

Source

Vendor

Product

Scheme

Affected versions

nvd

debian

debian linux

generic

9.0 · 10.0 · 11.0

nvd

openssl

generic

≥ 1.0.2 and ≤ 1.0.2 · ≥ 1.1.1 and ＜ 1.1.1 · 3.0.0 · 3.0.0:alpha1 · 3.0.0:alpha10 · 3.0.0:alpha11 · 3.0.0:alpha12 · 3.0.0:alpha13 · 3.0.0:alpha14 · 3.0.0:alpha15 · 3.0.0:alpha16 · 3.0.0:alpha17 · 3.0.0:alpha2 · 3.0.0:alpha3 · 3.0.0:alpha4 · 3.0.0:alpha5 · 3.0.0:alpha6 · 3.0.0:alpha7 · 3.0.0:alpha8 · 3.0.0:alpha9 · 3.0.0:beta1 · 3.0.0:beta2

nvd

oracle

enterprise manager ops center

generic

12.4.0.0

nvd

oracle

health sciences inform publisher

generic

6.2.1.1 · 6.3.1.1

nvd

oracle

jd edwards enterpriseone tools

generic

9.2.6.3

nvd

oracle

jd edwards world security

generic

a9.4

nvd

oracle

peoplesoft enterprise peopletools

generic

8.58 · 8.59

nvd

siemens

sinec ins

generic

1.0 · ＜ 1.0 · 1.0:sp1

References

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf	Third Party Advisory
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3bf7b73ea7123045b8f972badc67ed6878e6c37f
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=6fc1aaaf303185aa5e483e06bdfae16daa9193a7
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=e9e726506cd2a3fd9c0f12daf8cc1fe934c7dddb
https://security.gentoo.org/glsa/202210-02	Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://www.debian.org/security/2022/dsa-5103	Third Party Advisory
https://www.openssl.org/news/secadv/20220128.txt	Vendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	Third Party Advisory

URL

Timeline

Published	2022-01-28	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.

Published

2022-01-28

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

How VRT decided (5 of 24 rules ran)

5 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification decided it matched Outside Waratek scope Found in legacy manual classifications

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

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