CVE-2021-43275: opendesign drawings_software_development_kit Use After Free

Vulnerability summary

CVE-2021-43275 is a high (CVSS 7.8) Use After Free vulnerability in opendesign drawings_software_development_kit. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.4% of scored vulnerabilities.

Timeline

1. 14-11-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A Use After Free vulnerability exists in the DGN file reading procedure in Open Design Alliance Drawings SDK before 2022.8. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

• CWE-416Use After FreeThe 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.