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OpenAdvisories
Medium ALAS2-2025-2963 1 CVE

Moderate: mod_security security update (Amazon Linux 2)

Published Aug 5, 2025 · Updated Aug 19, 2025

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-52891: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.8 to before 2.9.11, an empty XML tag can cause a segmentation fault. If SecParseXmlIntoArgs is set to On or OnlyArgs, and the request type is application/xml, and at least one XML tag is empty (eg <foo></foo>), then a segmentation fault occurs. This issue has been patched in version 2.9.11. A workaround involves setting SecParseXmlIntoArgs to Off.

Fixed packages 3

ReleasePackageFixed in
Amazon Linux · 2 mod_security 0:2.9.11-1.amzn2.0.1
Amazon Linux · 2 mod_security-debuginfo 0:2.9.11-1.amzn2.0.1
Amazon Linux · 2 mod_security-mlogc 0:2.9.11-1.amzn2.0.1

Vulnerabilities 1

  • Medium 6.5
    CVE-2025-52891

    ModSecurity empty XML tag causes segmentation fault

    ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.8 to before 2.9.11, an empty XML tag can cause a segmentation fault. If SecParseXmlIntoArgs is set to On or OnlyArgs, and the reques…

    owasp-modsecurity ModSecurity modsecurity modsecurity-apache Debian Ubuntu

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-52891.html