----------------------------------------------------------------------

Want to join the Secunia Security Team?

Secunia offers a position as a security specialist, where your daily
work involves reverse engineering of software and exploit code,
auditing of source code, and analysis of vulnerability reports.

http://secunia.com/secunia_security_specialist/

----------------------------------------------------------------------

TITLE:
MAILsweeper for SMTP/Exchange Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA20756

VERIFY ADVISORY:
http://secunia.com/advisories/20756/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, DoS

WHERE:
>From remote

SOFTWARE:
CS MAILsweeper 4.x for Exchange 2000
http://secunia.com/product/205/
CS MAILsweeper 4.x for SMTP
http://secunia.com/product/202/

DESCRIPTION:
Some vulnerabilities have been reported in MAILsweeper for
SMTP/Exchange, which can be exploited by malicious people to bypass
certain security restrictions and potentially cause a DoS (Denial of
Service).

1) An error exists within the handling of messages that specify a
non-existent character set. This can be exploited to bypass text
analysis.

2) An error exists within the handling of reverse DNS lookups when
the "Received" header in a message includes non-ASCII characters. 
This can be exploited to cause the Receiver service to stop
processing messages.

3) An error exists within the handling of certain malformed messages.
This can be exploited to cause the Security service to stop processing
messages.

The vulnerabilities have been reported in the following products:
* MAILsweeper for SMTP version 4.3.19
* MIMEsweeper for Exchange version 4.3.19

Prior versions may also be affected.

SOLUTION:
Update to version 4.3.20 (requires 4.3.19).

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4,3,20.htm

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------