TITLE:
XMail Command Line Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA17194

VERIFY ADVISORY:
http://secunia.com/advisories/17194/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
XMail 1.x
http://secunia.com/product/3685/

DESCRIPTION:
A vulnerability has been reported in XMail, which can be exploited by
malicious, local users to gain escalated privileges.

The vulnerability is caused due to a boundary error in the
"AddressFromAtPtr()" function when copying the hostname portion of an
e-mail address to a 256-byte buffer. This can be exploited to cause a
stack-based buffer overflow via a specially crafted email address
passed to the "-t" command line option. 

Successful exploitation allows arbitrary code execution with
escalated privileges. The RPM binary distribution of XMail reportedly
installs the binary with setuid root privileges. Other distribution
installs the binary setgid mail.

The vulnerability has been reported in version 1.21.

SOLUTION:
Update to version 1.22.
http://www.xmailserver.org/

PROVIDED AND/OR DISCOVERED BY:
Discovered by anonymous person and reported via iDEFENSE.

ORIGINAL ADVISORY:
iDEFENSE:
http://www.idefense.com/application/poi/display?id=321&type=vulnerabilities

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