USN-3353-1

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    USN-3353-1

    Published: 14 Jul 2017Last Modified: 22 Apr 2026

    Summary: heimdal vulnerability

    Details: Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered that Heimdal clients incorrectly trusted unauthenticated portions of Kerberos tickets. A remote attacker could use this to impersonate trusted network services or perform other attacks.

    References: https://ubuntu.com/security/notices/USN-3353-1, https://ubuntu.com/security/CVE-2017-11103

    Affected packages

    Package

    Name: heimdal

    Purl: pkg:deb/ubuntu/[email protected]~git20131207+dfsg-1ubuntu1.2?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.6~git20131207+dfsg-1ubuntu1.2

    Affected versions

    1.6~git20120403+dfsg1-3ubuntu0.1
    1.6~git20120403+dfsg1-3ubuntu0.2

    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