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CVE-2021-41690

Published: 28 June 2022

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.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
dcmtk
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial
Released (3.6.1~20150924-5ubuntu0.1~esm1)
Available with Ubuntu Pro
jammy
Released (3.6.6-5ubuntu0.1~esm1)
Available with Ubuntu Pro
upstream
Released (3.6.7-1)
impish Ignored
(end of life)
kinetic Not vulnerable
(3.6.7-5)
bionic
Released (3.6.2-3ubuntu0.1~esm1)
Available with Ubuntu Pro
focal
Released (3.6.4-2.1ubuntu0.1~esm1)
Available with Ubuntu Pro
lunar Not vulnerable
(3.6.7-5)
mantic Not vulnerable
(3.6.7-5)
Patches:
upstream: https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H