---
title: "CVE-2011-1429\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-2011-1429?format=md
keywords: index, follow
---

# CVE-2011-1429

Publication date 16 March 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Mutt does not verify that the smtps server hostname matches the domain name
of the subject of an X.509 certificate, which allows man-in-the-middle
attackers to spoof an SSL SMTP server via an arbitrary certificate, a
different vulnerability than CVE-2009-3766.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-1429?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mutt | 11.04 natty | Fixed 1.5.21-2ubuntu3.1 |
| 10.10 maverick | Fixed 1.5.20-9ubuntu2.1 |
| 10.04 LTS lucid | Fixed 1.5.20-7ubuntu1.1 |
| 9.10 karmic | Ignored end of life |
| 8.04 LTS hardy | Not affected |
| 6.06 LTS dapper | 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)

## Notes

---

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

debian may have used an incomplete patch from the upstream
bug.

---

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

This is not specific to SMTPS. It is in the common code that
uses GnuTLS, meaning that the IMAPS and POP3S protocols are also
affected.
Debian is carrying a fix that upstream has not applied. It doesn't
look like this issue is fixed upstream. RHEL is also carrying the
same fix.
The fix may be the cause of a mutt sidebar related bug (a feature
patch that debian and ubuntu carry)
After more investigation, the sidebar related bug was preexisting.
Hardy's version of mutt has a considerably different
mutt\_ssl\_gnutls.c and my testing has shown that it is not affected.

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1429)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-1429)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-1429)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-1429)

### Related Ubuntu Security Notices (USN)

+ [USN-1221-1](https://usn.ubuntu.com/USN-1221-1)
+ Mutt vulnerability
+ 29 September 2011

### Other references

* <http://seclists.org/fulldisclosure/2011/Mar/87>
* <https://www.cve.org/CVERecord?id=CVE-2011-1429>