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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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By status

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 3 matches · 2 protected · 0 exploited · 0 CISA KEV · 2 EPSS ≥ 0.5
3matches 2protected66.7% 0exploited0.0% 0CISA KEV0.0% 2EPSS ≥ 0.566.7%
Protected by Waratek 2 66.7% Rule in development 0 0.0% Mitigation candidate 1 33.3% No exploit published 0 0.0%
Critical 0 0.0% High 1 33.3% Medium 2 66.7% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 2 66.7% partly blocked 0 0.0% not blocked 1 33.3% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 3 100.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 1 / quarter
Mitigation candidate: 1Protected by Waratek: 2 Medium: 2High: 1 not blocked: 1blocked by ARMR today: 2 Working exploit published: 3
Q1 171 Protected by Waratek1 Medium1 blocked by ARMR today1 Working exploit published1 Q2 170 Q3 170 Q4 170 Q1 180 Q2 180 Q3 180 Q4 180 Q1 190 Q2 191 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 Q3 190 Q4 190 Q1 200 Q2 200 Q3 200 Q4 201 Protected by Waratek1 High1 blocked by ARMR today1 Working exploit published1
Q2 17Q4 17Q2 18Q4 18Q2 19Q4 19Q2 20Q4 20
3 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-2020-26217 High 2020-11-16 Protected by Waratek Working exploit published XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.
CVE-2019-0221 Medium 2019-05-28 Mitigation candidate Working exploit published The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.
CVE-2016-5725 Medium 2017-01-19 Protected by Waratek Working exploit published Directory traversal vulnerability in JCraft JSch before 0.1.54 on Windows, when the mode is ChannelSftp.OVERWRITE, allows remote SFTP servers to write to arbitrary files via a ..\ (dot dot backslash) in a response to a recursive GET command.