SAP Security Notes, May 2018

SAP released an update for Hot News Note 2357141 which addresses a critical OS command injection vulnerability in the terminology export report program of  SAPterm (transaction STERM). STERM is used to search SAP-delivered terminology and create and maintain customer-specific terminology. TERM_EXCEL_EXPORT is a standard executable program that enables users to export terminology repositories to Excel. The program calls function modules that accept unfiltered user commands in expressions that are used to call systems. This could be abused by attackers perform arbitrary operating system commands using the elevated privileges of the <sid>adm user.  The impact of such an exploit could include compromise of the entire SAP file system in the effected host. This explains the high CVSS base score of 9.1 / 10 for Note 23557141. The Note rates high in terms of the impact to information confidentiality, integrity and availability. Systems with SAP_BASIS versions 7.31 – 7.66 should be patched to the relevant Support Package level listed in the Note.

There was also an important update for Note 2622660 which includes critical security updates for web browser controls delivered with SAP Business Client. The Client provides a unified environment for SAP applications including Fiori, SAP GUI, and Web Dynpro.  It supports browser controls from Internet Explorer (IE) and Chrome for displaying HTML content. Security corrections for the WebBrowser control of the .NET framework in IE are delivered directly by Microsoft.

Unlike IE, the browser control for Chrome is embedded in SAP Business Client using the open source Chromium Embedded Framework (CEF). Security fixes are provided by the Chromium project and delivered by SAP through periodic Security Notes.  Note 2622660 includes corrections addressed by Chromium releases 64 and 65. The critical rating of the note is due to the fact that the highest CVSS rating of the security corrections bundled in the fixes is 9.8/10.

Finally, Note 2537150 was re-released with updated support pack information. The Note includes corrections to automatically terminate active sessions for users whose  passwords have been changed in BusinessObjects.

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