TITLE:
Ipswitch IMail Server IMAP and SMTP Service Two Vulnerabilities

SECUNIA ADVISORY ID:
SA17863

VERIFY ADVISORY:
http://secunia.com/advisories/17863/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Ipswitch Collaboration Suite (ICS) 2.x
http://secunia.com/product/5167/
IMail Server 8.x
http://secunia.com/product/3048/

DESCRIPTION:
Two vulnerabilities have been reported in IMail Server, which can be
exploited by malicious users to cause a DoS (Denial of Service) and
to compromise a vulnerable system.

1) A format string error exists in the SMTPD32 service when parsing
arguments supplied to the "expn", "mail", "mail from", and "rcpt to"
commands. This can be exploited to execute arbitrary code via
specially crafted arguments sent to the affected commands.

2) An error exists in the IMAP4D32 service when handling user
supplied arguments passed to the IMAP LIST command. This can be
exploited by a logon user to cause a memory dereferencing error,
which crashes the IMAP service by supplying an argument of
approximately 8000 bytes to the command.

The vulnerabilities have been reported in IMail Server version 8.20.
Other versions prior to 8.22 may also be affected.

Note: IMail Server is included as part of the Ipswitch Collaboration
Suite.

SOLUTION:
Update to the fixed versions.

IMail Server 8.20:
Update to version 8.22.
http://www.ipswitch.com/support/imail/releases/imail_professional/im822.asp

Ipswitch Collaboration Suite 2.0:
Update to version 2.02.
http://www.ipswitch.com/support/ics/updates/ics202.asp

PROVIDED AND/OR DISCOVERED BY:
1) Nico
2) Sebastian Apelt

ORIGINAL ADVISORY:
http://www.idefense.com/application/poi/display?id=346&type=vulnerabilities
http://www.idefense.com/application/poi/display?id=347&type=vulnerabilities

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