dcmtk: DCMTK through 3.6.6 does not handle memory free properly
CVE-2021-41690 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2021-41690, released June 28, 2022. It is not reported as exploited. Patch Radar priority: High.
DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dcmtk · Debian 12.15 (bookworm) | 3.6.7-1 | DEBIAN-CVE-2021-41690 | Jun 28, 2022 |
| dcmtk · Debian 13.5 (trixie) | 3.6.7-1 | DEBIAN-CVE-2021-41690 | Jun 28, 2022 |
| dcmtk · Debian 14 | 3.6.7-1 | DEBIAN-CVE-2021-41690 | Jun 28, 2022 |
| dcmtk · Ubuntu 18.04.6 LTS (bionic) | 3.6.2-3ubuntu0.1~esm1 | dcmtk 3.6.2-3ubuntu0.1~esm1 | Dec 2, 2022 |
| dcmtk · Ubuntu 20.04 LTS (focal) | 3.6.4-2.1ubuntu0.1~esm1 | dcmtk 3.6.4-2.1ubuntu0.1~esm1 | Dec 2, 2022 |
| dcmtk · Ubuntu 22.04.1 LTS (jammy) | 3.6.6-5ubuntu0.1~esm1 | dcmtk 3.6.6-5ubuntu0.1~esm1 | Dec 2, 2022 |
| libdcmtk12 · Ubuntu 18.04.6 LTS (bionic) | 3.6.2-3ubuntu0.1~esm1 | libdcmtk12 3.6.2-3ubuntu0.1~esm1 | Dec 2, 2022 |
| libdcmtk14 · Ubuntu 20.04 LTS (focal) | 3.6.4-2.1ubuntu0.1~esm1 | libdcmtk14 3.6.4-2.1ubuntu0.1~esm1 | Dec 2, 2022 |
| libdcmtk16 · Ubuntu 22.04.1 LTS (jammy) | 3.6.6-5ubuntu0.1~esm1 | libdcmtk16 3.6.6-5ubuntu0.1~esm1 | Dec 2, 2022 |
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