Improper Input Validation Affecting eap7-log4j package, versions <0:2.17.1-1.redhat_00001.1.el8eap


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
96.67% (100th percentile)

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  • Snyk IDSNYK-RHEL8-EAP7LOG4J-5320937
  • published15 Dec 2021
  • disclosed14 Dec 2021

Introduced: 14 Dec 2021

CVE-2021-45046  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-502  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:8 eap7-log4j to version 0:2.17.1-1.redhat_00001.1.el8eap or higher.
This issue was patched in RHSA-2022:1297.

NVD Description

Note: Versions mentioned in the description apply only to the upstream eap7-log4j package and not the eap7-log4j package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.

References

CVSS Scores

version 3.1