Amazon Linux 2 Security Advisory: ALAS2-2025-2822
Advisory Released Date: 2025-04-16
Advisory Updated Date: 2025-04-16
Severity:
Medium
Issue Overview:
Rack is a modular Ruby web server interface. The Rack::Sendfile middleware logs unsanitised header values from the X-Sendfile-Type header. An attacker can exploit this by injecting escape sequences (such as newline characters) into the header, resulting in log injection. This vulnerability is fixed in 2.2.12, 3.0.13, and 3.1.11. (CVE-2025-27111)
Affected Packages:
pcs
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 pcs to update your system.
New Packages:
aarch64:
pcs-0.9.169-3.amzn2.3.0.4.aarch64
pcs-snmp-0.9.169-3.amzn2.3.0.4.aarch64
pcs-debuginfo-0.9.169-3.amzn2.3.0.4.aarch64
i686:
pcs-0.9.169-3.amzn2.3.0.4.i686
pcs-snmp-0.9.169-3.amzn2.3.0.4.i686
pcs-debuginfo-0.9.169-3.amzn2.3.0.4.i686
src:
pcs-0.9.169-3.amzn2.3.0.4.src
x86_64:
pcs-0.9.169-3.amzn2.3.0.4.x86_64
pcs-snmp-0.9.169-3.amzn2.3.0.4.x86_64
pcs-debuginfo-0.9.169-3.amzn2.3.0.4.x86_64