Linux Security
    Linux Security
    Linux Security

    ArchLinux: 201410-13: ejabberd: circumvention of encryption

    Date 27 Oct 2014
    295
    Posted By LinuxSecurity Advisories
    The package ejabberd before version 14.07-2 allows clients to connect with an unencrypted connection even if starttls_required is set.
    Arch Linux Security Advisory ASA-201410-13
    ==========================================
    
    Severity: High
    Date    : 2014-10-27
    CVE-ID  : CVE-2014-8760
    Package : ejabberd
    Type    : circumvention of encryption
    Remote  : No
    Link    : https://wiki.archlinux.org/index.php/CVE-2014
    
    Summary
    =======
    
    The package ejabberd before version 14.07-2 allows clients to connect
    with an unencrypted connection even if starttls_required is set.
    
    Resolution
    ==========
    
    Upgrade to 14.07-2.
    
    # pacman -Syu "ejabberd>=14.07-2"
    
    The problems have been fixed upstream [0] but no release version is
    available yet.
    
    Workaround
    ==========
    
    Disable compression ('zlib' in c2s configuration) and find affected
    users with:
    
    # ejabberdctl connected_users_info | grep 'c2s_compressed\s'
    
    You may kick affected user sessions and they should be able to reconnect
    with encryption and without compression.
    
    Description
    ===========
    
    It was discovered that ejabberd does not enforce the starttls_required
    setting when compression is used, which causes clients to unexpectedly
    establish connections without encryption.
    
    Impact
    ======
    
    A local user can unexpectedly connect without any encryption and send
    sensitive information in plaintext to the server even if encryption was
    set as required.
    
    References
    ==========
    
    [0] https://github.com/processone/ejabberd/commit/7bdc115
    https://mail.jabber.org/pipermail/operators/2014-October/002438.html
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8760
    https://bugs.archlinux.org/task/42541
    
    

    LinuxSecurity Poll

    'Tis the season of giving! How have you given back to the open-source community?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/49-tis-the-season-of-giving-how-have-you-given-back-to-the-open-source-community?task=poll.vote&format=json
    49
    radio
    [{"id":"171","title":"I've contributed to the development of an open-source project.","votes":"22","type":"x","order":"1","pct":34.92,"resources":[]},{"id":"172","title":"I've reviewed open-source code for security bugs.","votes":"13","type":"x","order":"2","pct":20.63,"resources":[]},{"id":"173","title":"I've made a donation to an open-source project.","votes":"28","type":"x","order":"3","pct":44.44,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

    Please vote first in order to view vote results.


    VIEW MORE POLLS

    bottom 200

    Please enable / Bitte aktiviere JavaScript!
    Veuillez activer / Por favor activa el Javascript![ ? ]

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.