Remote code execution in SAP NetWeaver AS JAVA

1) Improper Authorization

EUVDB-ID: #VU56487

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-37535

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper authorization checks in the JMS Connector Service in
SAP NetWeaver Application Server Java. A remote non-authenticated attacker can send a specially crafted request to the application server, bypass implemented security restrictions and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SAP NetWeaver AS JAVA: 7.11 - 7.50

CPE2.3

• cpe:2.3:a:sap:netweaver_as_java:7.11:*:*:*:*:*:*:*
• cpe:2.3:a:sap:netweaver_as_java:7.20:*:*:*:*:*:*:*
• cpe:2.3:a:sap:netweaver_as_java:7.30:*:*:*:*:*:*:*

External links

https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405
https://launchpad.support.sap.com/#/notes/3078609

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.