CVE-2024-31309

Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 2.45% Top 20%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Traffic Server
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread/f9qh3g3jvy153wh82pz4onrfj1wh13kc vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV/
https://lists.debian.org/debian-lts-announce/2024/04/msg00021.html
http://www.openwall.com/lists/oss-security/2024/04/03/16
http://www.openwall.com/lists/oss-security/2024/04/10/7

Frequently Asked Questions

What is the severity of CVE-2024-31309?
CVE-2024-31309 has been scored as a high severity vulnerability.
How to fix CVE-2024-31309?
To fix CVE-2024-31309, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-31309 being actively exploited in the wild?
It is possible that CVE-2024-31309 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-31309?
CVE-2024-31309 affects Apache Software Foundation Apache Traffic Server.
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