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Insecure Library Loading
Moderately critical

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

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Release Date:  2008-11-03    Last Update:  2008-11-11    Views:  7,124

Secunia Advisory SA32483

Where:

From remote

Impact:

Privilege escalation, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

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.

Further details available to Secunia VIM customers

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

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

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

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

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