Improper Certificate Validation Affecting apache-log4j2 package, versions <2.16.0-0.20.04.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-UBUNTU2004-APACHELOG4J2-1128224
  • published20 Dec 2021
  • disclosed27 Apr 2020

Introduced: 27 Apr 2020

CVE-2020-9488  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 apache-log4j2 to version 2.16.0-0.20.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache-log4j2 package and not the apache-log4j2 package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1

References

CVSS Base Scores

version 3.1