CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
79.3%
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.
github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15
github.com/coturn/coturn/commit/170da1140797748ae85565b5a93a2e35e7b07b6a
github.com/coturn/coturn/issues/583
github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm
launchpad.net/bugs/cve/CVE-2020-4067
nvd.nist.gov/vuln/detail/CVE-2020-4067
security-tracker.debian.org/tracker/CVE-2020-4067
ubuntu.com/security/notices/USN-4415-1
www.cve.org/CVERecord?id=CVE-2020-4067
www.debian.org/security/2020/dsa-4711
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
79.3%