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TITLE:
Alt-N SecurityGateway "username" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA30497

VERIFY ADVISORY:
http://secunia.com/advisories/30497/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Alt-N SecurityGateway 1.x
http://secunia.com/product/18916/

DESCRIPTION:
securfrog has discovered a vulnerability in Alt-N SecurityGateway,
which can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error in the processing
of HTTP requests sent to the administrative web interface. This can be
exploited to cause a stack-based buffer overflow via an overly long
"username" parameter sent to SecurityGateway.dll.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 1.0.1. Other versions may
also be affected.

SOLUTION:
Restrict network access to the administrative web interface.

PROVIDED AND/OR DISCOVERED BY:
securfrog

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/5718

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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.

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