Alerts This Week
Warning Icon 1 1,153
Alerts This Week
Warning Icon 1 1,153

Ubuntu 20.04 LTS USN-7010-2: Critical DCMTK regression issue

ubuntu
Calendar Grey July 8, 2025
Dist Ubuntu Esm H88
A significant problem with DCMTK on Ubuntu has caused a regression affecting various LTS versions. Prompt updates are advised.
USN-7010-1 introduced a regression in DCMTK

Summary

USN-7010-1 introduced a regression in DCMTK

Software Description:

- dcmtk: OFFIS DICOM toolkit command line utilities

Details:

USN-7010-1 fixed vulnerabilities in DCMTK. The update introduced a

regression. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Jinsheng Ba discovered that DCMTK incorrectly handled certain requests. If

a user or an automated system were tricked into opening a certain specially

crafted input file, a remote attacker could possibly use this issue to

cause a denial of service. This issue only affected Ubuntu 20.04 LTS.

(CVE-2021-41687, CVE-2021-41688, CVE-2021-41689, CVE-2021-41690)

Sharon Brizinov and Noam Moshe discovered that DCMTK incorrectly handled

pointers. If a user or an automated system were tricked into opening a

certain specially crafted input file, a remote attacker could possibly use

this issue to cause a denial of service. This issue only affected

Ubuntu 20.04 LTS. (CVE-2022-2121)

I...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important regression dcmtk

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
  dcmtk                           3.6.4-2.1ubuntu0.2
  libdcmtk14                      3.6.4-2.1ubuntu0.2

Ubuntu 18.04 LTS
  dcmtk                           3.6.2-3ubuntu0.1~esm3
                                  Available with Ubuntu Pro
  libdcmtk12                      3.6.2-3ubuntu0.1~esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  dcmtk                           3.6.1~20150924-5ubuntu0.1~esm3
                                  Available with Ubuntu Pro
  libdcmtk5                       3.6.1~20150924-5ubuntu0.1~esm3
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7010-2

https://ubuntu.com/security/notices/USN-7010-2

CVE-2021-41687

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7010-2

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important regression dcmtk

Package Information

https://launchpad.net/ubuntu/+source/dcmtk/3.6.4-2.1ubuntu0.2

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here