Vulnerabilities > CVE-2021-41689 - NULL Pointer Dereference vulnerability in Offis Dcmtk

Summary

DCMTK through 3.6.6 does not handle string copy properly. Sending specific requests to the dcmqrdb program, it would query its database and copy the result even if the result is null, which can incur a head-based overflow. An attacker can use it to launch a DoS attack.

Vulnerable Configurations

Common Weakness Enumeration (CWE)

• CWE-476 - NULL Pointer Dereference

References