Two vulnerabilities have been reported in UW-imapd, which can be exploited by malicious, local users to potentially gain escalated privileges, and by malicious people to potentially compromise a vulnerable system.

1) A boundary error in the "tmail" utility when processing overly long mailbox names (over 1024 bytes) can be exploited to cause a stack-based buffer overflow.

NOTE: The vulnerability may allow a local user to execute arbitrary code with root privileges if the utility is installed set-uid root.

2) A boundary error in the "dmail" utility when processing overly long mailbox names (over 1024 bytes) can be exploited to cause a stack-based buffer overflow.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code, but requires that the utilities are configured as a delivery backend for a mail transfer agent allowing overly long destination mailbox names.

The vulnerabilities are reported in versions prior to 2007d.

Solution
Update to version 2007d.
Further details available to Secunia VIM customers

Provided and/or discovered by
Aron Andersson and Jan Sahlin, Bitsec

Changelog
Further details available to Secunia VIM customers

Original Advisory
UW-imapd:
http://mailman2.u.washington.edu/pipermail/imap-uw/2008-October/002267.html
http://mailman2.u.washington.edu/pipermail/imap-uw/2008-October/002268.html

Bitsec:
http://www.bitsec.com/en/rad/bsa-081103.txt

Deep Links
Links available to Secunia VIM customers