On 12.04.2022 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 3165333 addresses "[CVE-2022-28215] URL Redirection vulnerability in SAP NetWeaver ABAP Server and ABAP Platform" to prevent url redirection vulnerability with a medium risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process, the team suggests.
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 specificationThis note has been re-released with updated 'Solution’ information. SAP NetWeaver ABAP Server and ABAP Platform allows an unauthenticated attacker to redirect users to a malicious site due to insufficient URL validation. This could lead to the user being tricked to disclose personal information.
The sanitization is corrected and will suppress redirect information.
The advisory 3165333 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
- 6.5 [CVE-2023-23855] URL Redirection vulnerability in SAP Solution Manager
- 6.1 Multiple Vulnerabilities in URI.js bundled with SAPUI5
- 6.1 [CVE-2022-41207] URL Redirection vulnerability in SAP Biller Direct
- 6.1 [CVE-2022-41275] Offener Redirect in SAP Solutions Manager (Enterprise Search)
- 6.1 [CVE-2021-33707] URL Redirection vulnerability in SAP NetWeaver (Knowledge Management)