Advisory

SAP takes the security of its vast product portfolio very seriously and thus releases security fixes for vulnerabilities reported by external researchers and their customers every second Tuesday of the month.

SAP Note 3357154 was released on 10.10.2023 and deals with "[CVE-2023-40310] Missing XML Validation vulnerability in SAP PowerDesigner Client (BPMN2 import)" within SAP PowerDesigner. We advice you to follow the instructions, to resolve external entity tunneling (xxe) with a medium potential for exploitation in component BC-SYB-PD.

According to SAP Security Advisory team a workaround exists. It is advisable to implement the correction as part of maintenance.

Risk specification

SAP PowerDesigner Client does not sufficiently validate BPMN2 XML document imported by an unauthenticated attacker resulting in a external entity tunneling vulnerability.

Solution

The default security configuration was adjusted that no input in the BPMN2 from external entities are allowed. Alternativly, the consulting team has proposed the following: "As a workaround, edit untrusted BPMN2 file to remove external entities markups before import.". The suggestion may be considered, as a workaround or compensating mitigation. We recommend installing/applying the correction wherever possible and as soon as possible. Base your decision on whether or not to apply the patch on your companies and systems risk perspective and consider the provided CVSS 6.5 score.

The advisory is valid for

SYBASE POWERDESIGNER CLIENT 16.7 ⁴

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 PowerDesigner

CVSS 6.5

Component BC-SYB-PD

Patch Day2023-10

Released on2023/10/10

SAP Note 3357154

Workaround Yes

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
SAP PowerDesigner

_CVSS
6.5

_Component
BC-SYB-PD

_{Patch Day}
2023-10

_{Released
on}
2023/10/10

_{SAP Note}
3357154

_Workaround
Yes