UBUNTU-CVE-2017-7521

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    UBUNTU-CVE-2017-7521

    Published: 21 Jun 2017Last Modified: 4 Feb 2026
    Upstream:
    CVE-2017-7521
    Aliases:
    USN-3339-1

    Summary:

    Details: OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().

    References: https://ubuntu.com/security/CVE-2017-7521, https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243, http://www.openwall.com/lists/oss-security/2017/06/21/6, https://ubuntu.com/security/notices/USN-3339-1, https://www.cve.org/CVERecord?id=CVE-2017-7521

    Affected packages

    Package

    Name: openvpn

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.2-7ubuntu3.2

    Affected versions

    2.3.2-4ubuntu1
    2.3.2-5ubuntu1
    2.3.2-7ubuntu1
    2.3.2-7ubuntu2
    2.3.2-7ubuntu3
    2.3.2-7ubuntu3.1

    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-2017-7521 | CVE-DB