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

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
dcmtk Launchpad, Ubuntu, Debian	bionic	Released (3.6.2-3ubuntu0.1~esm1)
	focal	Released (3.6.4-2.1ubuntu0.1~esm1)
	impish	Ignored (reached end-of-life)
	jammy	Released (3.6.6-5ubuntu0.1~esm1)
	kinetic	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)

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

References

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