UBUNTU-CVE-2022-40318

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    UBUNTU-CVE-2022-40318

    Published: 3 May 2023Last Modified: 16 Jul 2025
    Upstream:
    CVE-2022-40318

    Summary:

    Details: An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.

    References: https://ubuntu.com/security/CVE-2022-40318, https://www.cve.org/CVERecord?id=CVE-2022-40318

    Affected packages

    Package

    Name: frr

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.2.1-1ubuntu0.2

    Affected versions

    6.0.2-2build2

    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
    UBUNTU-CVE-2022-40318 | CVE-DB