Linux Security
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    Debian: DSA-4791-1: pacemaker security update

    Date 12 Nov 2020
    384
    Posted By LinuxSecurity Advisories
    Ken Gaillot discovered a vulnerability in the Pacemaker cluster resource manager: If ACLs were configured for users in the "haclient" group, the ACL restrictions could be bypassed via unrestricted IPC communication, resulting in cluster-wide arbitrary code execution with
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    Debian Security Advisory DSA-4791-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Moritz Muehlenhoff
    November 13, 2020                     https://www.debian.org/security/faq
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    Package        : pacemaker
    CVE ID         : CVE-2020-25654
    Debian Bug     : 973254
    
    Ken Gaillot discovered a vulnerability in the Pacemaker cluster
    resource manager: If ACLs were configured for users in the "haclient"
    group, the ACL restrictions could be bypassed via unrestricted IPC
    communication, resulting in cluster-wide arbitrary code execution with
    root privileges.
    
    If the "enable-acl" cluster option isn't enabled, members of the
    "haclient" group can modify Pacemaker's Cluster Information Base without
    restriction, which already gives them these capabilities, so there is
    no additional exposure in such a setup.
    
    For the stable distribution (buster), this problem has been fixed in
    version 2.0.1-5+deb10u1.
    
    We recommend that you upgrade your pacemaker packages.
    
    For the detailed security status of pacemaker please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/pacemaker
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    

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