PT-2025-29086 · Open Information Security Foundation+2 · Suricata+2

Jasonish · Published 2025-07-10 · Updated 2025-11-07 · CVE-2025-53538

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Suricata versions 7.0.10 and below Suricata versions 8.0.0-beta1 through 8.0.0-rc1

Description Suricata, a network IDS, IPS, and NSM engine, is affected by an issue where mishandling of data on HTTP2 stream 0 can lead to uncontrolled memory usage, potentially resulting in loss of visibility.

Recommendations Suricata versions prior to 7.0.11: Disable the HTTP/2 parser. Suricata versions prior to 7.0.11: Utilize a signature like drop http2 any any -> any any (frame:http2.hdr; byte test:1,=,0,3; byte test:4,=,0,5; sid: 1;) to mitigate the issue. Suricata versions prior to 8.0.0: Disable the HTTP/2 parser. Suricata versions prior to 8.0.0: Utilize a signature like drop http2 any any -> any any (frame:http2.hdr; byte test:1,=,0,3; byte test:4,=,0,5; sid: 1;) to mitigate the issue.

Exploit

Fix

Resource Exhaustion

Allocation of Resources Without Limits

Weakness Enumeration

CWE-400

CWE-770

Related Identifiers

ALT-PU-2025-14099

BDU:2025-08912

CVE-2025-53538

GHSA-QRR7-CRGJ-CMH3

Affected Products

Alt Linux

Debian

Suricata

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53538.json · Exploit
• https://github.com/OISF/suricata/security/advisories/GHSA-qrr7-crgj-cmh3 · Patch
• https://github.com/OISF/suricata/commit/1d6d331752e933c46aca0ae7a9679b27462246e3 · Patch
• https://github.com/OISF/suricata/commit/7fa88ea9e7d05e07a7864050cfd836b576669720 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-53538 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-53538 · Security Note
• https://osv.dev/vulnerability/CVE-2025-53538 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53538 · Security Note
• https://ubuntu.com/security/CVE-2025-53538 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-53538 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-08912 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-53538 · Vendor Advisory
• https://t.me/cvetracker/28419 · Telegram Post
• https://t.me/cveNotify/129918 · Telegram Post
• https://twitter.com/CVEnew/status/1947776815667548601 · Twitter Post