ALSA-2023:2570

    Dashboard / Vulnerabilities / ALSA-2023:2570

    ALSA-2023:2570

    Published: 9 May 2023Last Modified: 4 Feb 2026

    Summary: Moderate: krb5 security, bug fix, and enhancement update

    Details: Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). The following packages have been upgraded to a later upstream version: krb5 (1.20.1). (BZ#2016312) Security Fix(es): * Kerberos: delegation constrain bypass in S4U2Proxy (CVE-2020-17049) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

    References: https://access.redhat.com/errata/RHSA-2023:2570, https://access.redhat.com/security/cve/CVE-2020-17049, https://bugzilla.redhat.com/2025721, https://errata.almalinux.org/9/ALSA-2023-2570.html

    Affected packages

    Package

    Name: krb5-devel

    Purl: pkg:rpm/almalinux/krb5-devel

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.20.1-8.el9

    Affected versions

    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
    ALSA-2023:2570 | CVE-DB