TITLE:
AppScan QA HTTP Response Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA18013

VERIFY ADVISORY:
http://secunia.com/advisories/18013/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
AppScan 5.x QA
http://secunia.com/product/6530/

DESCRIPTION:
Mariano Nunez Di Croce has reported a vulnerability in AppScan QA,
which potentially can be exploited by malicious people to compromise
a user's system.

The vulnerability is caused due to a boundary error when handling 401
HTTP responses. This can be be exploited to cause a buffer overflow
via a specially crafted 401 response that contains a WWW-Authenticate
header with the "Realm" field consisting of more than 351 characters.

Successful exploitation requires that the user uses AppScan to scan a
malicious web server.

The vulnerability has been reported in version 5.0.134, and 5.0.609
Subscription 7

SOLUTION:
The vulnerability has reportedly been fixed in Subscription 8.

PROVIDED AND/OR DISCOVERED BY:
Mariano Nunez Di Croce, Cybsec S.A.

ORIGINAL ADVISORY:
http://www.cybsec.com/vuln/CYBSEC_Security_Advisory_AppScanQA_RemoteCodeExec.pdf

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

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

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