CVE-2020-4067

Published: 29 June 2020

In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly. There is a leak of information between different client connections. One client (an attacker) could use their connection to intelligently query coturn to get interesting bytes in the padding bytes from the connection of another client. This has been fixed in 4.5.1.3.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
coturn Launchpad, Ubuntu, Debian	bionic	Released (4.5.0.7-1ubuntu2.18.04.2)
	eoan	Released (4.5.1.1-1.1ubuntu0.19.10.1)
	focal	Released (4.5.1.1-1.1ubuntu0.20.04.1)
	trusty	Does not exist
	upstream	Released (4.5.1.3-1)
	xenial	Released (4.5.0.3-1ubuntu0.3)

Severity score breakdown

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

References

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