High severity · published Jun 29, 2020
CVE-2020-4067
In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly
7.5
CVSS
1.9%
EPSS
No
On KEV
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:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Coturn · Coturn Project
before 4.5.1.3 · source: NVD
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32 · source: NVD
LE
Leap · Opensuse
15.2 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 19.10; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-4067
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-4067
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.html
Release Notes
https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15
Issue Tracking
https://github.com/coturn/coturn/issues/583
Third Party Advisory
https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm
Mailing List
https://lists.debian.org/debian-lts-announce/2020/07/msg00002.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
More from Ubuntu Linux
9.8
CVE-2020-11651
SaltStack Salt Authentication Bypass Vulnerability
9.8
CVE-2020-7247
OpenSMTPD Remote Code Execution Vulnerability
9.8
CVE-2019-11043
Underflow in PHP-FPM can lead to RCE
9.8
CVE-2019-16928
Exim Out-of-bounds Write Vulnerability
9.8
CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation