---
title: "CVE-2013-1416\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2013-1416?format=md
keywords: index, follow
---

# CVE-2013-1416

Publication date 19 April 2013

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## 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.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2013-1416?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| krb5 | 14.04 LTS trusty | Not affected |
| 13.10 saucy | Not affected |
| 13.04 raring | Ignored end of life |
| 12.10 quantal | Ignored end of life |
| 12.04 LTS precise | Fixed 1.10+dfsg~beta1-2ubuntu0.5 |
| 11.10 oneiric | Ignored end of life |
| 10.04 LTS lucid | Fixed 1.8.1+dfsg-2ubuntu0.13 |
| 8.04 LTS hardy | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2013-1416?format=md#patch-details)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

per Debian, only krb5 releases 1.7 to 1.10 are affected

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| krb5 | * Upstream:   [8ee70ec](https://github.com/krb5/krb5/commit/8ee70ec63931d1e38567905387ab9b1d45734d81) |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1416)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-1416)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-1416)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-1416)

### Related Ubuntu Security Notices (USN)

+ [USN-2310-1](https://usn.ubuntu.com/USN-2310-1)
+ Kerberos vulnerabilities
+ 11 August 2014

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2013-1416>