CVE-2024-31309
HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 94.6%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 94.62% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- apache/traffic server · debian/debian linux · fedoraproject/fedora
- Source
- security@apache.org
EPSS 94.6% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2024/04/03/16Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/10/7Mailing List
- https://lists.apache.org/thread/f9qh3g3jvy153wh82pz4onrfj1wh13kcMailing List, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00021.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/04/03/16Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/10/7Mailing List
- https://lists.apache.org/thread/f9qh3g3jvy153wh82pz4onrfj1wh13kcMailing List, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00021.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO/Third Party Advisory
- https://www.kb.cert.org/vuls/id/421644
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.