Multiple vulnerabilities have been reported in SAP NetWeaver, which can be exploited by malicious users to conduct script insertion attacks and by malicious people to conduct cross-site scripting attacks.

1) Certain unspecified input is not properly sanitised in the XI SOAP Adapter (com.sap.aii.af.soapadapter) 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.

2) Input passed to the "logonUrl" parameter in the BSP logon page (/sap/bc/public/bsp/sap/system_public/logon.htm) is not 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.

3) Input passed to the "fileNameL" and "directoryNameL" parameters in the CheckService and ExportabilityCheck servlets, "XiDynPage_ThreadId" parameter in the ViewCaches servlet, "thread", "invert", and "filter" parameters in the ShowMemLog servlet, "id" parameter in error_msg.jsp, and "refresh" parameter in ViewCaches.jsp is not 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.

4) Input passed via the "logger" parameter to ViewLogger.jsp and "class" parameter to the ShowMemLog servlet is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.

Solution
Apply fixes (please see the vendor's advisory for details).

Provided and/or discovered by
1, 3, 4) Dmitriy Evdokimov, Digital Security Research Group (DSecRG)
2) Alexey Sintsov, Digital Security Research Group (DSecRG)

Original Advisory
SAP:
https://service.sap.com/sap/support/notes/1438191
https://service.sap.com/sap/support/notes/1450270
https://service.sap.com/sap/support/notes/1512776

Digital Security Research Group (DSECRG-11-009, DSECRG-11-010, DSECRG-11-012, DSECRG-11-013):
http://dsecrg.com/pages/vul/show.php?id=309
http://dsecrg.com/pages/vul/show.php?id=310
http://dsecrg.com/pages/vul/show.php?id=312
http://dsecrg.com/pages/vul/show.php?id=313

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