An unauthenticated attacker in SAP Web Dispatcher - versions WEBDISP 7.49, WEBDISP 7.53, WEBDISP 7.54, WEBDISP 7.77, WEBDISP 7.81, WEBDISP 7.85, WEBDISP 7.88, WEBDISP 7.89, WEBDISP 7.90, KERNEL 7.49, KERNEL 7.53, KERNEL 7.54 KERNEL 7.77, KERNEL 7.81, KERNEL 7.85, KERNEL 7.88, KERNEL 7.89, KERNEL 7.90, KRNL64NUC 7.49, KRNL64UC 7.49, KRNL64UC 7.53, HDB 2.00, XS_ADVANCED_RUNTIME 1.00, SAP_EXTENDED_APP_SERVICES 1, can submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify information on the server or make it temporarily unavailable.

SAP Kernel (RFC), KRNL32NUC, KRNL32UC and KRNL64NUC before versions 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64UC, before versions 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.73 and KERNEL before versions 7.21, 7.49, 7.53, 7.73, 7.76 SAP GUI for Windows (BC-FES-GUI) before versions 7.5, 7.6, and SAP GUI for Java (BC-FES-JAV) before version 7.5, allow an attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service.

ABAP Server (used in NetWeaver and Suite/ERP) and ABAP Platform does not sufficiently validate an XML document accepted from an untrusted source, leading to an XML External Entity (XEE) vulnerability. Fixed in Kernel 7.21 or 7.22, that is ABAP Server 7.00 to 7.31 and Kernel 7.45, 7.49 or 7.53, that is ABAP Server 7.40 to 7.52 or ABAP Platform. For more recent updates please refer to Security Note 2870067 (which supersedes the solution of Security Note 2736825) in the reference section below.

Under certain conditions the SAP Change and Transport System (ABAP), SAP KERNEL 32 NUC, SAP KERNEL 32 Unicode, SAP KERNEL 64 NUC, SAP KERNEL 64 Unicode 7.21, 7.21EXT, 7.22 and 7.22EXT; SAP KERNEL 7.21, 7.22, 7.45, 7.49, 7.53 and 7.73, allows an attacker to transport information which would otherwise be restricted.

SAP Gateway (SAP KERNEL 32 NUC, SAP KERNEL 32 Unicode, SAP KERNEL 64 NUC, SAP KERNEL 64 Unicode 7.21, 7.21EXT, 7.22 and 7.22EXT; SAP KERNEL 7.21, 7.22, 7.45, 7.49 and 7.53) allows an attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service.

SAP Startup Service, SAP KERNEL 7.45, 7.49, and 7.52, is missing an authentication check for functionalities that require user identity and cause consumption of file system storage.

A Trusted RFC connection in SAP KERNEL 32NUC, SAP KERNEL 32Unicode, SAP KERNEL 64NUC, SAP KERNEL 64Unicode 7.21, 7.21EXT, 7.22, 7.22EXT; SAP KERNEL from 7.21 to 7.22, 7.45, 7.49, can be established to a different client or a different user on the same system, although no explicit Trusted/Trusting Relation to the same system has been defined.

URL redirection vulnerability in SAP's Startup Service, SAP KERNEL 32 NUC, SAP KERNEL 32 Unicode, SAP KERNEL 64 NUC, SAP KERNEL 64 Unicode 7.21, 7.21EXT, 7.22 and 7.22EXT; SAP KERNEL 7.21, 7.22, 7.45, 7.49 and 7.52, that allows an attacker to redirect users to a malicious site.