CVE-2023-30631: Apache Traffic Server: Configuration option to block the PUSH method in ATS didn't work

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-14 · updated 2026-06-17
Weakness: CWE-20

Description

Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server. The configuration option proxy.config.http.push_method_enabled didn't function. However, by default the PUSH method is blocked in the ip_allow configuration file.This issue affects Apache Traffic Server: from 8.0.0 through 9.2.0. 8.x users should upgrade to 8.1.7 or later versions 9.x users should upgrade to 9.2.1 or later versions

Affected products

Apache Software Foundation Apache Traffic Server: from 8.0.0 before 8.1.7; from 9.0.0 before 9.2.1 — fixed in 8.1.7, 9.2.1
Debian Linux: 10.0, 11.0, 12.0
Fedoraproject Fedora: 37, 38

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Traffic Server 8.1.7, 9.2.1. Check the vendor advisory for mitigations.

References

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