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TITLE:
UW-imapd "tmail" and "dmail" Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA32483

VERIFY ADVISORY:
http://secunia.com/advisories/32483/

CRITICAL:
Moderately critical

IMPACT:
Privilege escalation, System access

WHERE:
>From remote

SOFTWARE:
UW-imapd
http://secunia.com/advisories/product/1578/

DESCRIPTION:
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.
ftp://ftp.cac.washington.edu/imap

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://mailman2.u.washington.edu/pipermail/imap-uw/2008-October/002267.html
http://mailman2.u.washington.edu/pipermail/imap-uw/2008-October/002268.html

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