High Severity
Affected system
ABAP
CVSS
8.7
Component
FI-FIO-AP
Patch Day
2022-01
Released on
2022/01/11
SAP Note
3112928
Workaround
Yes
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Advisory

A note with CVSS 8.7 for component FI-FIO-AP was released by SAP on 11.01.2022. The correction/advisory 3112928 was described with "[CVE-2022-22531] Multiple vulnerabilities in F0743 Create Single Payment application of SAP S/4HANA" and affects the system type ABAP.

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 scripting code injection within ABAP.

Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production.

Risk specification

This note has been re-released with updated 'Solution' information. The F0743 Create Single Payment application of SAP S/4HANA does not check uploaded or downloaded files. A Reflected Cross-Site Scripting (XSS) vulnerability in SAP S/4HANA allows an attacker with basic user rights to run arbitrary script code, resulting in sensitive information being disclosed or modified. A code injection vulnerability in SAP S/4HANA allows an attacker with basic user rights to inject dangerous content or malicious code which could result in critical information being modified or completely compromise the availability of the application.

Solution

This SAP Security Note implements the Virus Scanner Interface (VSI) that checks a file during upload and download. This feature, however, relies on the antivirus software being installed, configured, and enabled on the client computer or other device from which a file is uploaded.  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 an alternative workaround, a manual scan of a file before its upload is recommended. Also, it is not advisable to open an uploaded file directly in a web browser. Instead, the file should be downloaded to the local file system and manually scanned before opening.".

Affected System

The advisory 3112928 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.

SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.

The advisory is valid for

 

 

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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