CVE Details
Basic Information
| Title | Suricata’s mishandling of data on HTTP2 stream 0 can lead to resource starvation |
|---|---|
| Type | cve |
| Published | 2025-07-22T21:36:03.976Z |
| Modified | 2025-07-22T21:36:03.976Z |
Product Information
| Vendor | OISF |
|---|---|
| Product | suricata |
| Version | < 7.0.11 |
CVSS Information
| Base Score | 7.5 (HIGH) |
|---|---|
| Attack Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected Products
- OISF suricata < 7.0.11
- OISF suricata >= 8.0.0-beta1, < 8.0.0
Additional Information
| CWE List | CWE-770, CWE-400 |
|---|---|
| Source | GitHub_M |
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.