Debian: DSA-4462-1: dbus security update

    Date13 Jun 2019
    CategoryDebian
    5985
    Posted ByLinuxSecurity Advisories
    Joe Vennix discovered an authentication bypass vulnerability in dbus, an asynchronous inter-process communication system. The implementation of the DBUS_COOKIE_SHA1 authentication mechanism was susceptible to a symbolic link attack. A local attacker could take advantage of this flaw
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-4462-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    June 13, 2019                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : dbus
    CVE ID         : CVE-2019-12749
    Debian Bug     : 930375
    
    Joe Vennix discovered an authentication bypass vulnerability in dbus, an
    asynchronous inter-process communication system. The implementation of
    the DBUS_COOKIE_SHA1 authentication mechanism was susceptible to a
    symbolic link attack. A local attacker could take advantage of this flaw
    to bypass authentication and connect to a DBusServer with elevated
    privileges.
    
    The standard system and session dbus-daemons in their default
    configuration are not affected by this vulnerability.
    
    The vulnerability was addressed by upgrading dbus to a new upstream
    version 1.10.28 which includes additional fixes.
    
    For the stable distribution (stretch), this problem has been fixed in
    version 1.10.28-0+deb9u1.
    
    We recommend that you upgrade your dbus packages.
    
    For the detailed security status of dbus please refer to its security
    tracker page at:
    https://security-tracker.debian.org/tracker/dbus
    
    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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