Improper Input Validation Affecting log4j package, versions <0:1.2.12-1jpp_1rh


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
32.44% (97th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL10-LOG4J-9876590
  • published28 Apr 2025
  • disclosed3 Jun 2009

Introduced: 3 Jun 2009

CVE-2009-0033  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:10 log4j to version 0:1.2.12-1jpp_1rh or higher.
This issue was patched in RHSA-2010:0602.

NVD Description

Note: Versions mentioned in the description apply only to the upstream log4j package and not the log4j package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.

References

CVSS Base Scores

version 3.1