1. Ubuntu Security Notices
  2. USN-1143-1

USN-1143-1: Dovecot vulnerability

Publication date

2 June 2011

Overview

An attacker could send a crafted email message that could disrupt email service.

Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

It was discovered that the message header parser in Dovecot did not
properly handle ‘\0’ characters in header names. This could allow a
remote attacker to cause a denial of service through a crafted email
message by crashing the Dovecot daemon or corrupting mailboxes.

It was discovered that the message header parser in Dovecot did not
properly handle ‘\0’ characters in header names. This could allow a
remote attacker to cause a denial of service through a crafted email
message by crashing the Dovecot daemon or corrupting mailboxes.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
11.04 natty dovecot-common –  1:1.2.15-3ubuntu2.1
10.10 maverick dovecot-common –  1:1.2.12-1ubuntu8.2
10.04 lucid dovecot-common –  1:1.2.9-1ubuntu6.4

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References

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