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Cyrus IMAP Server: Multiple overflow vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200502-29 / cyrus-imapd
Release Date February 23, 2005
Latest Revision May 22, 2006: 02
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-mail/cyrus-imapd < 2.2.12 >= 2.2.12 All supported architectures

Related bugreports: #82404


The Cyrus IMAP Server is affected by several overflow vulnerabilities which could potentially lead to the remote execution of arbitrary code.

2.  Impact Information


The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail server.


Possible single byte overflows have been found in the imapd annotate extension and mailbox handling code. Furthermore stack buffer overflows have been found in fetchnews, the backend and imapd.


An attacker, who could be an authenticated user or an admin of a peering news server, could exploit these vulnerabilities to execute arbitrary code with the rights of the user running the Cyrus IMAP Server.

3.  Resolution Information


There is no known workaround at this time.


All Cyrus IMAP Server users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-2.2.12"

4.  References


Page updated February 23, 2005

Summary: This is a Gentoo Linux Security Advisory

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