USN-5828-1

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    USN-5828-1

    Published: 25 Jan 2023Last Modified: 29 Jun 2026

    Summary: krb5 vulnerabilities

    Details: It was discovered that Kerberos incorrectly handled certain S4U2Self requests. An attacker could possibly use this issue to cause a denial of service. This issue was only addressed in Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2018-20217) Greg Hudson discovered that Kerberos PAC implementation incorrectly handled certain parsing operations. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2022-42898)

    References: https://ubuntu.com/security/notices/USN-5828-1, https://ubuntu.com/security/CVE-2018-20217, https://ubuntu.com/security/CVE-2022-42898

    Affected packages

    Package

    Name: krb5

    Purl: pkg:deb/ubuntu/krb5?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.12+dfsg-2ubuntu5.4+esm3

    Affected versions

    1.10.1+dfsg-6.1ubuntu1

    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
    USN-5828-1 | CVE-DB