Advisory

On 16.12.2021 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within Java.

SAP Note 3130521 addresses "[CVE-2021-44228] Remote Code Execution vulnerability associated with Apache Log4j 2 component used in Java Web Service Adapter of SAP NetWeaver Process Integration" to prevent code injection with a hot news risk for exploitation.

A workaround does exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process, the team suggests.

Risk specification

The component log4j allows an attacker to execute malicious code when he is in control of log messages or message parameter.

Solution

The application's dependencies were updated to a newer release that no longer contains these log4j vulnerabilities. Circumstances exist that prevent the timely installation of a patch provided by the manufacturer. In such cases, you may consider applying the suggested workaround as a temporary or compensating mitigation: "You can apply the workaround procedure explained in the note. If possible, set the java parameter log4j2.formatMsgNoLookups=true".

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

SAP_XIAF 7.50 ¹¹

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-XI-CON-JWS

Patch Day2021-12

Released on2021/12/16

SAP Note 3130521

Workaround Yes

Advisory

Risk specification

Solution

Affected System

Disclaimer

_{Affected system}
Java

_CVSS
9.9

_Component
BC-XI-CON-JWS

_{Patch Day}
2021-12

_{Released
on}
2021/12/16

_{SAP Note}
3130521

_Workaround
Yes