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Oracle Critical Patch Update April 2021

Released April 2021 · Oracle's advisory ↗ · ← Critical Patch Update, January 2021 · Critical Patch Update, July 2021 →

258 CVEs in this release, one square each

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Share this chart Oracle Critical Patch Update April 2021, one square per CVE: 137 Java CVEs, 19 protected by Waratek, 7 exploited, 121 other CVEs in this release.

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19Protected by Waratek3Mitigation candidate115No exploit published67Outside Waratek scope54Not applicable 7Exploited, marked by the ring

No exploit published. For 97 of them, Oracle's security advisory is the source of public detail.

Protected by Waratek. Waratek RASP can block exploitation of these on systems that have not applied the patch yet.

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Overview 6 matches · 2 exploited · 1 CISA KEV · 2 public PoC · 1 EPSS ≥ 0.5
6matches 2exploited33.3% 1CISA KEV16.7% 2public PoC33.3% 1EPSS ≥ 0.516.7%
Protected by Waratek 6 100.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0%
Critical 6 100.0% High 0 0.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 6 100.0% partly blocked 0 0.0% not blocked 0 0.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 2 33.3% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 4 66.7%
split by peak 1 / quarter
Protected by Waratek: 6 Critical: 6 blocked by ARMR today: 6 No public exploit: 4Exploited: 2
Q1 191 Protected by Waratek1 Critical1 blocked by ARMR today1 No public exploit1 Q2 191 Protected by Waratek1 Critical1 blocked by ARMR today1 No public exploit1 Q3 190 Q4 190 Q1 200 Q2 201 Protected by Waratek1 Critical1 blocked by ARMR today1 No public exploit1 Q3 201 Protected by Waratek1 Critical1 blocked by ARMR today1 No public exploit1 Q4 201 Protected by Waratek1 Critical1 blocked by ARMR today1 Exploited1 Q1 210 Q2 211 Protected by Waratek1 Critical1 blocked by ARMR today1 Exploited1
Q1 19Q2 19Q3 19Q4 19Q1 20Q2 20Q3 20Q4 20Q1 21Q2 21
6 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2021-2135 Critical 2021-04-22 Protected by Waratek Exploited Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Coherence Container). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVE-2020-17530 Critical 2020-12-11 Protected by Waratek Exploited Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25.
CVE-2020-11998 Critical 2020-09-10 Protected by Waratek No public exploit A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13
CVE-2020-10683 Critical 2020-05-01 Protected by Waratek No public exploit dom4j before 2.0.3 and 2.1.x before 2.1.3 allows external DTDs and External Entities by default, which might enable XXE attacks. However, there is popular external documentation from OWASP showing how to enable the safe, non-default behavior in any application that uses dom4j.
CVE-2019-0228 Critical 2019-04-17 Protected by Waratek No public exploit Apache PDFBox 2.0.14 does not properly initialize the XML parser, which allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted XFDF.
CVE-2019-3773 Critical 2019-01-18 Protected by Waratek No public exploit Spring Web Services, versions 2.4.3, 3.0.4, and older unsupported versions of all three projects, were susceptible to XML External Entity Injection (XXE) when receiving XML data from untrusted sources.