UBUNTU-CVE-2023-41909

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    UBUNTU-CVE-2023-41909

    Published: 5 Sept 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-41909
    Aliases:
    USN-6436-1

    Summary:

    Details: An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.

    References: https://ubuntu.com/security/CVE-2023-41909, https://github.com/FRRouting/frr/commit/cfd04dcb3e689754a72507d086ba3b9709fc5ed8, https://github.com/FRRouting/frr/commit/cc1a551cb007cc8ed8b1ea0605a7ab46c16de12b, https://github.com/FRRouting/frr/commit/0a12b878082f77b67ad5d9b4782846ac738575a2, https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8, https://ubuntu.com/security/notices/USN-6436-1, https://www.cve.org/CVERecord?id=CVE-2023-41909

    Affected packages

    Package

    Name: frr

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.2.1-1ubuntu0.2+esm1

    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-2023-41909 | CVE-DB