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Apache Tomcat Vulnerable to Denial of Service (DoS) via Improper Handling of chunk extensions

Moderate severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Apr 12, 2025

Package

maven org.apache.tomcat:tomcat (Maven)

Affected versions

>= 6.0.0, < 6.0.37
>= 7.0.0, < 7.0.30

Patched versions

6.0.37
7.0.30

Description

Apache Tomcat 6.x before 6.0.37 and 7.x before 7.0.30 does not properly handle chunk extensions in chunked transfer coding, which allows remote attackers to cause a denial of service by streaming data.

References

Published by the National Vulnerability Database Jun 1, 2013
Published to the GitHub Advisory Database May 14, 2022
Reviewed Apr 12, 2025
Last updated Apr 12, 2025

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(97th percentile)

Weaknesses

CVE ID

CVE-2012-3544

GHSA ID

GHSA-qfxv-3ppc-7qg5

Source code

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