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 3030604
was released on
08.06.2021 and deals with
"[CVE-2021-33663] Plaintext Injection in SAP NetWeaver AS for ABAP" within ABAP.
We advice you to follow the instructions, to resolve
medium potential for exploitation
in component BC-CST-IC.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as part of maintenance.
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 specificationAn unauthenticated attacker could insert a cleartext command into encrypted SMTP sessions in SAP NetWeaver AS ABAP due to improperly restricting I/O buffering. This may result in integrity issues of the application.
SAP NetWeaver AS ABAP will be applied by the SAP kernel patch mentioned in this note.
The advisory 3030604 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
- KERNEL 7.22 5
- KERNEL 7.49 11
- KERNEL 7.53 11
- KERNEL 7.73 5
- KERNEL 7.77 9
- KERNEL 7.81 8
- KERNEL 7.82 2
- KERNEL 7.83 5
- KERNEL 7.84 5
- KERNEL 8.04 4
- KRNL32NUC 7.22 6
- KRNL32NUC 7.22EXT 6
- KRNL32UC 7.22 6
- KRNL32UC 7.22EXT 6
- KRNL64NUC 7.22 9
- KRNL64NUC 7.22EXT 9
- KRNL64NUC 7.49 11
- KRNL64UC 7.22 9
- KRNL64UC 7.22EXT 9
- KRNL64UC 7.49 11
- KRNL64UC 7.53 8
- KRNL64UC 7.73 5
- KRNL64UC 8.04 4
- 9.9 [CVE-2021-38163] Unrestricted File Upload vulnerability in SAP NetWeaver (Visual Composer 7.0 RT)
- 7.2 [CVE-2020-6191] Missing Input Validation in SAP Landscape Management
- 7.2 [CVE-2020-6192] Missing Input Validation in SAP Landscape Management
- 7.2 [CVE-2020-6236] Privilege Escalation in SAP Landscape Management (SAP Adaptive Extensions)
- 7.2 [CVE-2020-6234] Privilege Escalation in SAP Host Agent