CVE-2025-53538

Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions 7.0.10 and below and 8.0.0-beta1 through 8.0.0-rc1, mishandling of data on HTTP2 stream 0 can lead to uncontrolled memory usage, leading to loss of visibility. Workarounds include disabling the HTTP/2 parser, and using a signature like drop http2 any any -> any any (frame:http2.hdr; byte_test:1,=,0,3; byte_test:4,=,0,5; sid: 1;) where the first byte test tests the HTTP2 frame type DATA and the second tests the stream id 0. This is fixed in versions 7.0.11 and 8.0.0.

Reserved 2025-07-02 | Published 2025-07-22 | Updated 2025-07-22 | Assigner GitHub_M

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

CWE-400: Uncontrolled Resource Consumption

Product status

< 7.0.11
affected

>= 8.0.0-beta1, < 8.0.0
affected

References

github.com/...ricata/security/advisories/GHSA-qrr7-crgj-cmh3

github.com/...ommit/1d6d331752e933c46aca0ae7a9679b27462246e3

github.com/...ommit/7fa88ea9e7d05e07a7864050cfd836b576669720

cve.org (CVE-2025-53538)

nvd.nist.gov (CVE-2025-53538)

Download JSON