CVE-2018-9336

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    CVE-2018-9336

    Published: 1 May 2018Last Modified: 8 Jul 2026

    Summary:

    Details: openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.

    References: http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761, https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24, https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6, https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b, https://www.tenable.com/security/research/tra-2018-09

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 307abe7b32e951ece58c7964b3fa72536aee6724
    Fixed -b3a7f452206607fb23d5cea76339dfb164c283f2

    Affected versions

    v2.4.5
    v2.4.4
    v2.4.3
    v2.4.2
    v2.4.1
    v2.4.0

    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
    CVE-2018-9336 | CVE-DB