Advisory

A note with CVSS 8.8 for component BC-CST-WDP was released by SAP on 10.08.2021. The correction/advisory 3057378 was described with "Missing Authentication check in SAP Web Dispatcher" and affects the system type Kernel.

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

The vulnerability addressed is code injection within Kernel.

Risk specification

This note has been re-released with updated 'Support Package & Patches' information. SAP Web Dispatcher does not perform any authentication checks for functionalities that require user identity. This could allow an attacker with network access to authenticate to the system behind the Web dispatcher with any user.

Solution

The correction ensures that the authenticity of the client is checked correctly. Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "As a workaround the client certificate handling of the Web dispatcher can be disabled. However this would disable certificate based authentication to the system.".

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.

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Notifications

Affected system Kernel

CVSS 8.8

Component BC-CST-WDP

Patch Day2021-08

Released on2021/08/10

SAP Note 3057378

Workaround Yes

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
Kernel

_CVSS
8.8

_Component
BC-CST-WDP

_{Patch Day}
2021-08

_{Released
on}
2021/08/10

_{SAP Note}
3057378

_Workaround
Yes