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    CVE-2020-4067

    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.

    Published:Jun 29, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 29, 2020
    EPSS Score:0.01056
    CVSS Score:7

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Coturn Project
    Product
    Coturn
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Opensuse
    Product
    Leap

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.html
    https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15
    https://github.com/coturn/coturn/issues/583
    https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm
    https://lists.debian.org/debian-lts-announce/2020/07/msg00002.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNJJO77ZLGGFJWNUGP6VDG5HPAC5UDBK/
    https://usn.ubuntu.com/4415-1/
    https://www.debian.org/security/2020/dsa-4711
    http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.html
    https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15
    https://github.com/coturn/coturn/issues/583
    https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm
    https://lists.debian.org/debian-lts-announce/2020/07/msg00002.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNJJO77ZLGGFJWNUGP6VDG5HPAC5UDBK/
    https://usn.ubuntu.com/4415-1/
    https://www.debian.org/security/2020/dsa-4711

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High