CVE-2019-5892

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    CVE-2019-5892

    Published: 10 Jan 2019Last Modified: 4 Sept 2026

    Summary:

    Details: bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and the BGP session was closed.

    References: https://frrouting.org/community/security/cve-2019-5892.html, https://github.com/FRRouting/frr/releases/tag/frr-3.0.4, https://github.com/FRRouting/frr/releases/tag/frr-4.0.1, https://github.com/FRRouting/frr/releases/tag/frr-5.0.2, https://github.com/FRRouting/frr/releases/tag/frr-6.0.2, https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a, https://lists.frrouting.org/pipermail/frog/2019-January/000404.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 3e71b5d907e9a58049e188cd88ad86614c5ad4f6
    Fixed -None

    Affected versions

    4.0

    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
    CVE-2019-5892 | CVE-DB