Vulnerabilities > CVE-2021-43391 - Out-of-bounds Read vulnerability in Opendesign Drawings Software Development KIT 2021.11/2021.12
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An Out-of-Bounds Read vulnerability exists when reading a DXF file using Open Design Alliance Drawings SDK before 2022.11. The specific issue exists within the parsing of DXF files. Crafted data in a DXF file (an invalid dash counter in line types) can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-491245.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-491245.pdf
- https://www.opendesign.com/security-advisories
- https://www.opendesign.com/security-advisories
- https://www.zerodayinitiative.com/advisories/ZDI-21-1352/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1352/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1361/
- https://www.zerodayinitiative.com/advisories/ZDI-21-1361/