TITLE:
SAP Web Application Server Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA17515

VERIFY ADVISORY:
http://secunia.com/advisories/17515/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting, Spoofing

WHERE:
>From remote

SOFTWARE:
SAP Web Application Server 6.x
http://secunia.com/product/3327/
SAP Web Application Server 7.x
http://secunia.com/product/6087/

DESCRIPTION:
Cybsec S.A. has reported some vulnerabilities in SAP Web Application
Server, which can be exploited by malicious people to conduct
cross-site scripting, phishing, and HTTP response splitting attacks.

1) Input passed to the "sap-syscmd" parameter in "fameset.htm" and
the "BspApplication" field in the "SYSTEM PUBLIC" test application
isn't properly sanitised before being returned to the user. This can
be exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.

The vulnerabilities have been reported in versions 6.10, 6.20, 6.40,
and 7.00, and affect the BSP runtime of SAP Web Application Server.
Other versions may also be affected.

2) Input passed to the query string in pages generating error
messages isn't properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a
user's browser session in context of an affected site.

The vulnerability has been reported in version 6.10 and affects the
BSP runtime of SAP Web Application Server. Prior versions may also be
affected.

3) The problem is that an absolute URL for an external site can be
specified in the "sapexiturl" parameter passed to "fameset.htm". This
can be exploited to trick users into visiting a malicious web site by
following a specially crafted link with a trusted hostname
redirecting to the malicious web site.

The vulnerabilities have been reported in versions 6.10, 6.20, 6.40,
and 7.00, and affect the BSP runtime of SAP Web Application Server.
Other versions may also be affected.

4) Input passed to the "sap-exiturl" parameter isn't properly
sanitised before being returned to the user. This can be exploited to
inject arbitrary HTTP headers, which will be included in the response
sent to the user.

The vulnerabilities have been reported in versions 6.10, 6.20, 6.40,
and 7.00, and affect the BSP runtime of SAP Web Application Server.
Other versions may also be affected.

SOLUTION:
The vendor has reportedly provided a solution for the
vulnerabilities. Customers should contact the SAP's support for
further information.

PROVIDED AND/OR DISCOVERED BY:
Leandro Meiners, Cybsec S.A.

ORIGINAL ADVISORY:
http://www.cybsec.com/vuln/CYBSEC_Security_Advisory_Multiple_XSS_in_SAP_WAS.pdf
http://www.cybsec.com/vuln/CYBSEC_Security_Advisory_Phishing_Vector_in_SAP_WAS.pdf
http://www.cybsec.com/vuln/CYBSEC_Security_Advisory_HTTP_Response_Splitting_in_SAP_WAS.pdf

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