CVE-2025-31698

Apache Traffic Server: Client IP address from PROXY protocol is not used for ACL

State: Published
Severity: 7.5 High
Published: Jun 19, 2025
Updated: Jun 20, 2025
Reserved: Mar 31, 2025

Description

ACL configured in ip_allow.config or remap.config does not use IP addresses that are provided by PROXY protocol.

Users can use a new setting (proxy.config.acl.subjects) to choose which IP addresses to use for the ACL if Apache Traffic Server is configured to accept PROXY protocol. This issue affects undefined: from 10.0.0 through 10.0.6, from 9.0.0 through 9.2.10.

Users are recommended to upgrade to version 9.2.11 or 10.0.6, which fixes the issue.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
Apache Traffic ServerApache Software Foundation	10.0.0 through 10.0.6Affected 9.0.0 through 9.2.10Affected

References

https://lists.apache.org/thread/15t32nxbypqg1m2smp640vjx89o6v5f8vendor-advisory

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