UBUNTU-CVE-2023-38710

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    UBUNTU-CVE-2023-38710

    Published: 25 Aug 2023Last Modified: 20 May 2026
    Upstream:
    CVE-2023-38710

    Summary:

    Details: An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.

    References: https://ubuntu.com/security/CVE-2023-38710, https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt, https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.patch, https://www.cve.org/CVERecord?id=CVE-2023-38710

    Affected packages

    Package

    Name: libreswan

    Purl: pkg:deb/ubuntu/libreswan?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.20-7build1

    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-2023-38710 | CVE-DB