CVE-2020-4067
coturn - security update
7.5
HIGH
CVSS 3.1
EPSS 0.87%
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.
How to fix CVE-2020-4067
To remediate CVE-2020-4067, upgrade the affected package to a fixed version below.
- —upgrade to 4.5.1.3-1 or later
- —upgrade to 4.2.1.2-1+deb8u2 or later
- —upgrade to 4.5.0.5-1+deb9u2 or later
Is CVE-2020-4067 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 4.5.1.3-1
- from 0, < 4.2.1.2-1+deb8u2
- from 0, < 4.5.0.5-1+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |