NULL pointer dereference in DCMTK - CVE-2021-41689
Published: August 18, 2023
Vulnerability identifier: #VU79682
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-2021-41689
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
DCMTK
Fedora
ctk
OpenImageIO
dcmtk
Fedora
ctk
OpenImageIO
dcmtk
How to mitigate CVE-2021-41689
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
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