TITLE:
Blue Coat ProxyAV Host Header Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA18909

VERIFY ADVISORY:
http://secunia.com/advisories/18909/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From local network

OPERATING SYSTEM:
Blue Coat ProxyAV 2.x
http://secunia.com/product/8103/

DESCRIPTION:
A vulnerability has been reported in ProxyAV, which can be exploited
by malicious people to cause a DoS (Denial of Service) or potentially
compromise a vulnerable device.

The vulnerability is caused due to a boundary error within the
handling of "Host" headers, which can be exploited to cause a
stack-based buffer overflow via an overly long "Host" header field.

NOTE: The vulnerability only affects web console access to the
device.

SOLUTION:
The vulnerability will be fixed in ProxyAV 2.4.2.3.

Until the fixed version is available, the vendor recommends
restricting access to the web interface to trusted IP addresses (see
vendor advisory for details).

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://www.bluecoat.com/support/knowledge/advisory_host_header_stack_overflow.html

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