---
title: "CVE-2012-4505\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-2012-4505?format=md
keywords: index, follow
---

# CVE-2012-4505

Publication date 12 October 2012

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Heap-based buffer overflow in the px\_pac\_reload function in lib/pac.c in
libproxy 0.2.x and 0.3.x allows remote servers to have an unspecified
impact via a crafted Content-Length size in an HTTP response header for a
proxy.pac file request, a different vulnerability than CVE-2012-4504.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-4505?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libproxy | 12.10 quantal | Not affected |
| 12.04 LTS precise | Not affected |
| 11.10 oneiric | Fixed 0.3.1-2ubuntu6.1 |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Fixed 0.3.1-1ubuntu1.1 |
| 8.04 LTS hardy | Not in release |

---

* [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-2012-4505?format=md#patch-details)

## Notes

---

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

0.4 not 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 |
| --- | --- |
| libproxy | * Other:   <https://bugzilla.redhat.com/attachment.cgi?id=625842> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4505)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-4505)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-4505)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-4505)

### Related Ubuntu Security Notices (USN)

+ [USN-1629-1](https://usn.ubuntu.com/USN-1629-1)
+ libproxy vulnerabilities
+ 12 November 2012

### Other references

* <http://www.openwall.com/lists/oss-security/2012/10/12/1>
* <https://www.cve.org/CVERecord?id=CVE-2012-4505>