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[SA17062] UW-imapd Mailbox Name Parsing Buffer Overflow Vulnerability
From: Secunia Security Advisories (sec-adv
secunia.com)
Date: Wed Oct 05 2005 - 05:09:05 CDT
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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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