---
title: "CVE-2013-4351\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-2013-4351?format=md
keywords: index, follow
---

# CVE-2013-4351

Publication date 13 September 2013

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits
cleared (no usage permitted) as if it has all bits set (all usage
permitted), which might allow remote attackers to bypass intended
cryptographic protection mechanisms by leveraging the subkey.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| gnupg | 13.04 raring | Fixed 1.4.12-7ubuntu1.2 |
| 12.10 quantal | Fixed 1.4.11-3ubuntu4.3 |
| 12.04 LTS precise | Fixed 1.4.11-3ubuntu2.4 |
| 10.04 LTS lucid | Fixed 1.4.10-2ubuntu1.4 |
| gnupg2 | 13.04 raring | Fixed 2.0.19-2ubuntu1.1 |
| 12.10 quantal | Fixed 2.0.17-2ubuntu3.2 |
| 12.04 LTS precise | Fixed 2.0.17-2ubuntu2.12.04.3 |
| 10.04 LTS lucid | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4351)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-4351)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-4351)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-4351)

### Related Ubuntu Security Notices (USN)

+ [USN-1987-1](https://usn.ubuntu.com/USN-1987-1)
+ GnuPG vulnerabilities
+ 9 October 2013

### Other references

* <http://www.openwall.com/lists/oss-security/2013/09/13>
* <https://www.cve.org/CVERecord?id=CVE-2013-4351>