CVE-2021-41687
First published: Tue Jun 28 2022(Updated: )
DCMTK through 3.6.6 does not handle memory free properly. The program malloc a heap memory for parsing data, but does not free it when error in parsing. Sending specific requests to the dcmqrdb program incur the memory leak. An attacker can use it to launch a DoS attack.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/dcmtk | <=3.6.5-1 | 3.6.7-9~deb12u1 3.6.8-6 |
| DCMTK | <=3.6.6 |
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Reference Links
- https://github.com/DCMTK/dcmtk
- https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb
- https://lists.debian.org/debian-lts-announce/2024/06/msg00022.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41687
- https://nvd.nist.gov/vuln/detail/CVE-2021-41687
- https://launchpad.net/bugs/cve/CVE-2021-41687
- https://security-tracker.debian.org/tracker/CVE-2021-41687
- https://ubuntu.com/security/CVE-2021-41687
Frequently Asked Questions
What is the severity of CVE-2021-41687?
CVE-2021-41687 has been classified as a medium severity vulnerability due to the memory leak that can lead to a denial-of-service attack.
How do I fix CVE-2021-41687?
To mitigate CVE-2021-41687, upgrade DCMTK to version 3.6.7-9~deb12u1 or 3.6.8-6 to address the memory leak issue.
What software is affected by CVE-2021-41687?
CVE-2021-41687 affects DCMTK versions up to and including 3.6.6.
What type of attack can be launched using CVE-2021-41687?
An attacker can exploit CVE-2021-41687 to launch a denial-of-service (DoS) attack by causing a memory leak.
When was CVE-2021-41687 last updated?
CVE-2021-41687 was last updated on September 17, 2021.
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