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    Debian: DSA-3912-1: heimdal security update

    Date 16 Jul 2017
    509
    Posted By LinuxSecurity Advisories
    Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams reported that Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos, trusts metadata taken from the unauthenticated plaintext (Ticket), rather than the authenticated and encrypted KDC response. A
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-3912-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    July 16, 2017                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : heimdal
    CVE ID         : CVE-2017-11103
    Debian Bug     : 868208
    
    Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams reported that
    Heimdal, an implementation of Kerberos 5 that aims to be compatible with
    MIT Kerberos, trusts metadata taken from the unauthenticated plaintext
    (Ticket), rather than the authenticated and encrypted KDC response. A
    man-in-the-middle attacker can use this flaw to impersonate services to
    the client.
    
    See https://orpheus-lyre.info/ for details.
    
    For the oldstable distribution (jessie), this problem has been fixed
    in version 1.6~rc2+dfsg-9+deb8u1.
    
    For the stable distribution (stretch), this problem has been fixed in
    version 7.1.0+dfsg-13+deb9u1.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 7.4.0.dfsg.1-1.
    
    We recommend that you upgrade your heimdal packages.
    
    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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