A use-after-free issue exists in the DGN file-reading procedure in the Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a memory corruption or arbitrary code execution, allowing attackers to cause a denial-of-service condition or execute code in the context of the current process.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-159-02 | third party advisory us government resource |
| https://cert-portal.siemens.com/productcert/pdf/ssa-365397.pdf | third party advisory patch |
| https://www.zerodayinitiative.com/advisories/ZDI-21-987/ | third party advisory vdb entry |
| https://www.zerodayinitiative.com/advisories/ZDI-21-990/ | third party advisory vdb entry |
| https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdf | third party advisory patch |