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 2911267
was released on
09.06.2020 and deals with
"Update 1 to Security Note 2752614 - [CVE-2019-0319] Content Injection Vulnerability in SAP Gateway" within ABAP.
We advice you to follow the instructions, to resolve
content injection
with a
medium potential for exploitation
in component OPU-GW-COR.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as monthly patch process.
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
The SAP Gateway allows an attacker to inject content which is displayed in the form of an error message. An attacker could thus mislead a user to believe this information is from the legitimate service when it's not. The reason for the update is, this note covers the fix for additional releases.Solution
The SAP Gateway ensures that only OData ABNF syntax can occur within the URI depending on the corresponding OData version.
Affected System
The advisory 2911267 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
- GW_CORE 200
- SAP_GWFND 740
