Memory leak in DCMTK - CVE-2021-41687

Vulnerability identifier: #VU79679

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-41687

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can force the application to leak memory and perform denial of service attack.

DCMTK
Fedora
ctk
OpenImageIO
dcmtk

Install updates from vendor's website.

DCMTK - update to 3.6.7
ctk - update to 0.1-0.24.20190721.fc37
OpenImageIO - update to 2.3.18.0-2.fc37
dcmtk - addressed in versions 3.6.4-11.el8, 3.6.6-12.el9, 3.6.7-1.fc37

• https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb

• Multiple vulnerabilities in OFFIS DCMTK
• Fedora EPEL 9 update for dcmtk
• Fedora EPEL 8 update for dcmtk
• Fedora 37 update for OpenImageIO, ctk, dcmtk