Resource exhaustion in Apache Traffic Server - CVE-2025-49763

Vulnerability identifier: #VU111269

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-49763

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in ESI Plugin. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

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

Install updates from vendor's website.

Apache Traffic Server - addressed in versions 9.2.11, 10.0.6
trafficserver-perl - addressed in versions 9.1.4-5, 9.2.11-1
trafficserver-devel - addressed in versions 9.1.4-5, 9.2.11-1
trafficserver-debugsource - addressed in versions 9.1.4-5, 9.2.11-1
trafficserver-debuginfo - addressed in versions 9.1.4-5, 9.2.11-1
trafficserver - addressed in versions 9.1.4-5, 9.2.11-1
trafficserver (Debian package) - update to 9.2.5+ds-0+deb12u3

• 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
• openEuler 20.03 LTS SP4 update for trafficserver