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CVE-2024-31309 Affecting trafficserver package, versions *

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
94.62% (100th percentile)

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  • Snyk IDSNYK-UBUNTU2004-TRAFFICSERVER-6553939
  • published26 Feb 2026
  • disclosed10 Apr 2024
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Introduced: 10 Apr 2024

CVE-2024-31309  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 trafficserver.

NVD Description

Note: Versions mentioned in the description apply only to the upstream trafficserver package and not the trafficserver package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.

Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.