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 3331376
was released on
11.07.2023 and deals with
"[CVE-2023-33989] Directory Traversal vulnerability in SAP NetWeaver (BI CONT ADD ON)" within ABAP.
We advice you to follow the instructions, to resolve
directory traversal
with a
high potential for exploitation
in component BW-BCT-GEN.
According to SAP Security Advisory team a workaround exists. 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
This note has been re-released with updated 'Correction instruction' information - An attacker with non-administrative authorizations can exploit a directory traversal flaw to over-write system files. Data from confidential files cannot be read but potentially some OS files can be over-written leading to system compromise.Solution
After applying the correction the report can no longer be executed. Alternativly, the consulting team has proposed the following: "As a workaround you can also manually delete the report referred to in the correction instruction of this note, as it is obsolete.". 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 8.7 score.
Affected System
The advisory 3331376 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
- BI_CONT 707 2
- BI_CONT 737 2
- BI_CONT 747 2
- BI_CONT 757 2
