Loop with Unreachable Exit Condition ('Infinite Loop') 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
Proof of Concept
EPSS
100% (100th percentile)

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  • Snyk IDSNYK-RHEL8-EAP7LOG4J-5320942
  • published20 Dec 2021
  • disclosed18 Dec 2021

Introduced: 18 Dec 2021

CVE-2021-45105  (opens in a new tab)
CWE-835  (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.

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

CVSS Base Scores

version 3.1