UBUNTU-CVE-2016-6329

    Dashboard / Vulnerabilities / UBUNTU-CVE-2016-6329

    UBUNTU-CVE-2016-6329

    Published: 31 Jan 2017Last Modified: 4 Feb 2026
    Upstream:
    CVE-2016-6329
    Aliases:
    USN-3339-1

    Summary:

    Details: OpenVPN, when using a 64-bit block cipher, makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack.

    References: https://ubuntu.com/security/CVE-2016-6329, https://community.openvpn.net/openvpn/wiki/SWEET32, https://sweet32.info/, https://ubuntu.com/security/notices/USN-3339-1, https://www.cve.org/CVERecord?id=CVE-2016-6329

    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