UBUNTU-CVE-2021-45079

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-45079

    UBUNTU-CVE-2021-45079

    Published: 24 Jan 2022Last Modified: 8 Apr 2026
    Upstream:
    CVE-2021-45079

    Summary:

    Details: In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

    References: https://ubuntu.com/security/CVE-2021-45079, https://github.com/strongswan/strongswan/releases/tag/5.9.5, https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html, https://ubuntu.com/security/notices/USN-5250-1, https://ubuntu.com/security/notices/USN-5250-2, https://www.cve.org/CVERecord?id=CVE-2021-45079

    Affected packages

    Package

    Name: strongswan

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.1.2-0ubuntu2.11+esm2

    Affected versions

    4.6.4-9

    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-2021-45079 | CVE-DB