Improper Input Validation Affecting log4j-manual package, versions <0:1.2.17-17.amzn2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
11.89% (96th percentile)

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  • Snyk IDSNYK-AMZN2-LOG4JMANUAL-2349119
  • published21 Jan 2022
  • disclosed14 Dec 2021

Introduced: 14 Dec 2021

CVE-2021-4104  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 log4j-manual to version 0:1.2.17-17.amzn2 or higher.
This issue was patched in ALAS2-2022-1739.

NVD Description

Note: Versions mentioned in the description apply only to the upstream log4j-manual package and not the log4j-manual package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.

CVSS Scores

version 3.1