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CVE-2023-46589: Apache Tomcat Improper Input Validation vulnerability

November 28, 2023 (updated February 13, 2025)

Improper Input Validation vulnerability in Apache Tomcat. Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82, and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

References

  • github.com/advisories/GHSA-fccv-jmmp-qg76
  • github.com/apache/tomcat
  • github.com/apache/tomcat/commit/6f181e1062a472bc5f0234980f66cbde42c1041b
  • github.com/apache/tomcat/commit/7a2d8818fcea0b51747a67af9510ce7977245ebd
  • github.com/apache/tomcat/commit/aa92971e879a519384c517febc39fd04c48d4642
  • github.com/apache/tomcat/commit/b5776d769bffeade865061bc8ecbeb2b56167b08
  • lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr
  • lists.debian.org/debian-lts-announce/2024/01/msg00001.html
  • nvd.nist.gov/vuln/detail/CVE-2023-46589
  • security.netapp.com/advisory/ntap-20231214-0009
  • tomcat.apache.org/security-10.html
  • tomcat.apache.org/security-11.html
  • tomcat.apache.org/security-8.html
  • tomcat.apache.org/security-9.html
  • www.openwall.com/lists/oss-security/2023/11/28/2

Code Behaviors & Features

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Affected versions

All versions starting from 8.5.0 before 8.5.96, all versions starting from 9.0.0-M1 before 9.0.83, all versions starting from 10.1.0-M1 before 10.1.16, all versions starting from 11.0.0-M1 before 11.0.0-M11

Fixed versions

  • 11.0.0-M11
  • 10.1.16
  • 9.0.83
  • 8.5.96

Solution

Upgrade to versions 10.1.16, 11.0.0-M11, 8.5.96, 9.0.83 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-20: Improper Input Validation
  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Source file

maven/org.apache.tomcat.embed/tomcat-embed-core/CVE-2023-46589.yml

Spotted a mistake? Edit the file on GitLab.

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