Security features bypass in Apache Traffic Server - CVE-2025-31698

Vulnerability identifier: #VU111268

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-31698

CWE-ID: CWE-254

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented IP-based ACLs.

The vulnerability exists due to application does not apply IP-based ACL on requests sent with PROXY HTTP method. A remote attacker can bypass implemented filtration and gain unauthorized access to the application. 

Apache Traffic Server
Debian Linux
openEuler
trafficserver (Debian package)
trafficserver
trafficserver-debuginfo
trafficserver-debugsource
trafficserver-devel
trafficserver-perl

Install updates from vendor's website.

Apache Traffic Server - addressed in versions 9.2.11, 10.0.6
trafficserver (Debian package) - update to 9.2.5+ds-0+deb12u3
trafficserver - update to 9.2.11-1
trafficserver-debuginfo - update to 9.2.11-1
trafficserver-debugsource - update to 9.2.11-1
trafficserver-devel - update to 9.2.11-1
trafficserver-perl - update to 9.2.11-1

• https://lists.apache.org/thread/5xl7j37vnb04c4jmdmwctvqx1pnqxf4g
• https://lists.apache.org/thread/lc3jb0wqx4wptgt3r6gdpgpbk0k3cv3p

• Multiple vulnerabilities in Apache Traffic Server
• Debian update for trafficserver
• openEuler 24.03 LTS update for trafficserver
• openEuler 24.03 LTS SP1 update for trafficserver
• openEuler 24.03 LTS SP2 update for trafficserver