High Severity
Affected system
Kernel
CVSS
8.8
Component
BC-CST-WDP
Patch Day
2021-08
Released on
2021/08/10
SAP Note
3057378
Workaround
Yes
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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.".

 

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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.

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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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