Advisory

A note with CVSS 4.6 for component CA-WUI-APF was released by SAP on 27.04.2021. The correction/advisory 2904569 was described with "Cross-Site Request Forgery (CSRF) vulnerability in SAP CRM WebClient UI" and affects the system type SAP CRM UI.

A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance.

The vulnerability addressed is cross-site request forgery (xsrf) within SAP CRM UI.

Risk specification

SAP CRM UI allows an attacker to trick an authenticated user to send unintended requests to the webserver.

Solution

CRM WebClient UI was adding the session token to the custom logo request. The session token is now removed. Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "Cross-site scripting/request forgery filter engine on IDS/IPS/firewall systems. ".

The advisory is valid for

S4FND 102 ¹²
S4FND 103 ¹²
S4FND 104 ¹²
SAPSCORE 120
WEBCUIF 701 ⁹
WEBCUIF 731 ¹¹
WEBCUIF 746 ¹¹
WEBCUIF 747 ¹¹
WEBCUIF 748 ¹²
WEBCUIF 800 ¹²
WEBCUIF 801 ¹²

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 SAP CRM UI

CVSS 4.6

Component CA-WUI-APF

Patch Day2021-05

Released on2021/04/27

SAP Note 2904569

Workaround Yes

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
SAP CRM UI

_CVSS
4.6

_Component
CA-WUI-APF

_{Patch Day}
2021-05

_{Released
on}
2021/04/27

_{SAP Note}
2904569

_Workaround
Yes