CVE-2021-41689: Null Pointer Dereference
First published: Tue 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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OFFIS DCMTK | <=3.6.6 | |
| debian/dcmtk | <=3.6.5-1 | 3.6.7-9~deb12u1 3.6.8-6 |
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Reference Links
- https://github.com/DCMTK/dcmtk
- https://github.com/DCMTK/dcmtk/commit/5c14bf53fb42ceca12bbcc0016e8704b1580920d
- https://lists.debian.org/debian-lts-announce/2024/06/msg00022.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41689
- https://nvd.nist.gov/vuln/detail/CVE-2021-41689
- https://launchpad.net/bugs/cve/CVE-2021-41689
- https://security-tracker.debian.org/tracker/CVE-2021-41689
- https://ubuntu.com/security/CVE-2021-41689
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- canonical/offis dcmtk
- version/offis dcmtk/3.6.6
- package-manager/debian