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High severity7.0NVD Advisory· Published Jun 29, 2020· Updated Jun 17, 2026

CVE-2020-4067

CVE-2020-4067

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

15
  • Coturn/Coturn3 versions
    cpe:2.3:a:coturn_project:coturn:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:coturn_project:coturn:*:*:*:*:*:*:*:*range: <4.5.1.3
    • (no CPE)range: <4.5.1.3
    • (no CPE)range: >= 5.1.1, < 6.0.0
  • Canonical/Ubuntu Linux4 versions
    cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*+ 3 more
    • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • Debian/linux3 versions
    cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • Fedoraproject/Fedora2 versions
    cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
    • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
  • OpenSUSE/Leap
    cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
  • osv-coords2 versions
    pkg:rpm/opensuse/coturn&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/coturn&distro=openSUSE%20Tumbleweed
    < 4.5.1.3-lp152.2.3.1+ 1 more
    • (no CPE)range: < 4.5.1.3-lp152.2.3.1
    • (no CPE)range: < 4.5.2-2.2

Patches

Vulnerability mechanics

References

9

News mentions

0

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