TITLE:
UW-imapd Mailbox Name Parsing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA17062

VERIFY ADVISORY:
http://secunia.com/advisories/17062/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

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

DESCRIPTION:
infamous41md has reported a vulnerability in UW-imapd, which can be
exploited by malicious users to cause a DoS (Denial of Service) or
compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the
"mail_valid_net_parse_work()" function when copying the user supplied
mailbox name to a stack buffer. This can be exploited to cause a
stack-based buffer overflow via a specially crafted mailbox name that
contains an single opening double-quote character, without the
corresponding closing double-quote.

Successful exploitation allows arbitrary code execution, but requires
valid credentials on the IMAP server.

The vulnerability has been reported in version imap-2004c1. Prior
versions may also be affected.

SOLUTION:
Update to version imap-2004g.
ftp://ftp.cac.washington.edu/imap/

PROVIDED AND/OR DISCOVERED BY:
infamous41md

ORIGINAL ADVISORY:
iDEFENSE:
www.idefense.com/application/poi/display?id=313&type=vulnerabilities

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