---
title: "CVE-2013-4576\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-2013-4576?format=md
keywords: index, follow
---

# CVE-2013-4576

Publication date 18 December 2013

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions
with certain patterns that introduce a side channel, which allows
physically proximate attackers to extract RSA keys via a chosen-ciphertext
attack and acoustic cryptanalysis during decryption. NOTE: applications are
not typically expected to protect themselves from acoustic side-channel
attacks, since this is arguably the responsibility of the physical device.
Accordingly, issues of this type would not normally receive a CVE
identifier. However, for this issue, the developer has specified a security
policy in which GnuPG should offer side-channel resistance, and
developer-specified security-policy violations are within the scope of CVE.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| gnupg | 13.10 saucy | Fixed 1.4.14-1ubuntu2.1 |
| 13.04 raring | Fixed 1.4.12-7ubuntu1.3 |
| 12.10 quantal | Fixed 1.4.11-3ubuntu4.4 |
| 12.04 LTS precise | Fixed 1.4.11-3ubuntu2.5 |
| 10.04 LTS lucid | Fixed 1.4.10-2ubuntu1.5 |

---

* [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-2013-4576?format=md#patch-details)

### 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 |
| --- | --- |
| gnupg | * Upstream:   <http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=93a96e3c0c33370248f6570d8285c4e811d305d4> * Upstream:   <http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=d0d72d98f34579213230b3febfebd2fd8dff272b> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4576)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-4576)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-4576)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-4576)

### Related Ubuntu Security Notices (USN)

+ [USN-2059-1](https://usn.ubuntu.com/USN-2059-1)
+ GnuPG vulnerability
+ 18 December 2013

### Other references

* <http://lists.gnupg.org/pipermail/gnupg-announce/2013q4/000337.html>
* <https://www.cve.org/CVERecord?id=CVE-2013-4576>