CVE-2020-4067 — Improper Initialization in Project Coturn
Severity
7.5HIGHNVD
CNA7.0
EPSS
1.1%
top 21.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJun 29
Latest updateJul 6
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages5 packages
Also affects: Debian Linux 10.0, 8.0, 9.0, Fedora 31, 32, Ubuntu Linux 16.04, 18.04, 19.10, 20.04