TITLE:
FTGate4 IMAP Examine Command Buffer Overflow

SECUNIA ADVISORY ID:
SA17609

VERIFY ADVISORY:
http://secunia.com/advisories/17609/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
FTGate 4 Groupware Mail server 4.x
http://secunia.com/product/6147/

DESCRIPTION:
Luca Ercoli has reported a vulnerability in FTGate 4 Groupware Mail
server, which can be exploited by malicious users to compromise a
vulnerable system.

The vulnerability is caused due to a boundary error when handling the
"Examine" IMAP command. This can be exploited to cause a stack-based
buffer overflow via an overly long mail folder name. Other IMAP
commands such as "Delete" may also be affected.

Successful exploitation allows arbitrary code execution.

The vulnerability has been confirmed in version 4.4 Build 4.4.000.
Other versions may also be affected.

SOLUTION:
Allow only trusted users to access the IMAP server.

PROVIDED AND/OR DISCOVERED BY:
Luca Ercoli

ORIGINAL ADVISORY:
http://www.lucaercoli.it/advs/FTGate4.txt

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