CVE-2021-41689: Null Pointer Dereference
Published Jun 28, 2022
·Updated
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.
Affected Software
2 affected componentsFixes available
debian/dcmtk<=3.6.5-1
3.6.7-9~deb12u13.6.8-6
OFFIS DCMTK<=3.6.6
Remediation
Event History
Jun 28, 2022
CVE Published
via MITRE·09:38 AM
Data Sourced
via MITRE·09:38 AM
Description
Data Sourced
via NVD·01:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 21, 2024
Data Sourced
via Ubuntu·10:10 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·10:11 AM
Description
Frequently Asked Questions
1
What is the severity of CVE-2021-41689?
CVE-2021-41689 has a medium severity rating as it can lead to a Denial of Service (DoS) attack.
2
How do I fix CVE-2021-41689?
To fix CVE-2021-41689, upgrade to DCMTK version 3.6.7 or later.
3
What software is affected by CVE-2021-41689?
CVE-2021-41689 affects DCMTK versions up to and including 3.6.6.
4
What type of vulnerability is CVE-2021-41689?
CVE-2021-41689 is a buffer overflow vulnerability caused by improper string copying.
5
Can CVE-2021-41689 be exploited remotely?
Yes, CVE-2021-41689 can be exploited remotely through crafted requests to the affected program.