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CVE-2021-41687

Published: 28 June 2022

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.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
dcmtk
Launchpad, Ubuntu, Debian
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
impish Ignored
(end of life)
jammy
Released (3.6.6-5ubuntu0.1~esm1)
Available with Ubuntu Pro
lunar Not vulnerable
(3.6.7-5)
trusty Does not exist

upstream
Released (3.6.7-1)
xenial
Released (3.6.1~20150924-5ubuntu0.1~esm1)
Available with Ubuntu Pro
kinetic Not vulnerable
(3.6.7-5)
mantic Not vulnerable
(3.6.7-5)

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