Advisory

A note with CVSS 9.9 for component BC-ESI-WS-JAV-RT was released by SAP on 14.09.2021. The correction/advisory 3081888 was described with "[CVE-2021-37531] Code Injection vulnerability in SAP NetWeaver Knowledge Management (XMLForms)" and affects the system type Java.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.

The vulnerability addressed is os command injection within Java.

Risk specification

The SAP NetWeaver Portal allows an authenticated attacker to exploit an XSLT vulnerability allowing the attacker to deploy XSL stylesheet files containing OS commands which will ultimately be accessed by the system. This can result in a compromise of confidentiality, integrity, and system availability.

Solution

The vulnerability is fixed with modifications to the XMLToolkit parser.

Affected System

SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.

The AS Java Home: SAP Netweaver Application Server Java wiki
A dedicated SAP NetWeaver 7.40 Application Server for Java Security Guide exists.

The advisory is valid for

Releated advisories

Disclaimer

SecurityBridge takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability concerning one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.

The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

In accordance with SAP guidelines, SecurityBridge only discloses issues where the fixing security note has been released. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.

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Notifications

Affected system Java

CVSS 9.9

Component BC-ESI-WS-JAV-RT

Patch Day2021-09

Released on2021/09/14

SAP Note 3081888

Workaround No

Advisory

Risk specification

Solution

Affected System

Disclaimer

_{Affected system}
Java

_CVSS
9.9

_Component
BC-ESI-WS-JAV-RT

_{Patch Day}
2021-09

_{Released
on}
2021/09/14

_{SAP Note}
3081888

_Workaround
No