Amazon Linux 2 Security Advisory: ALAS2-2025-2963
Advisory Released Date: 2025-08-19
Advisory Updated Date: 2025-08-19
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. (CVE-2025-52891)
Affected Packages:
mod_security
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update mod_security or yum update --advisory ALAS2-2025-2963 to update your system.
aarch64:
mod_security-2.9.11-1.amzn2.0.1.aarch64
mod_security-mlogc-2.9.11-1.amzn2.0.1.aarch64
mod_security-debuginfo-2.9.11-1.amzn2.0.1.aarch64
i686:
mod_security-2.9.11-1.amzn2.0.1.i686
mod_security-mlogc-2.9.11-1.amzn2.0.1.i686
mod_security-debuginfo-2.9.11-1.amzn2.0.1.i686
src:
mod_security-2.9.11-1.amzn2.0.1.src
x86_64:
mod_security-2.9.11-1.amzn2.0.1.x86_64
mod_security-mlogc-2.9.11-1.amzn2.0.1.x86_64
mod_security-debuginfo-2.9.11-1.amzn2.0.1.x86_64