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    Debian: DSA-2783-2: librack-ruby regression update

    Date 24 Oct 2013
    111
    Posted By LinuxSecurity Advisories
    The update of librack-ruby in DSA-2783-1 also addressed CVE-2013-0183. The patch applied breaks rails applications like redmine (see Debian Bug #727187). Updated packages are available to address this problem.
    
    - --------------------------------------------------------------------------
    Debian Security Advisory DSA-2783-2                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                      Salvatore Bonaccorso
    October 24, 2013                       https://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : librack-ruby
    Vulnerability  : several
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2011-5036 CVE-2013-0183 CVE-2013-0184 CVE-2013-0263
    Debian Bug     : 653963 698440 700226
    
    The update of librack-ruby in DSA-2783-1 also addressed CVE-2013-0183.
    The patch applied breaks rails applications like redmine (see Debian Bug
    #727187). Updated packages are available to address this problem.
    
    For reference, the original advisory text follows:
    
    Several vulnerabilities were discovered in Rack, a modular Ruby
    webserver interface. The Common Vulnerabilites and Exposures project
    identifies the following vulnerabilities:
    
    CVE-2011-5036
    
        Rack computes hash values for form parameters without restricting
        the ability to trigger hash collisions predictably, which allows
        remote attackers to cause a denial of service (CPU consumption)
        by sending many crafted parameters.
    
    CVE-2013-0184
    
        Vulnerability in Rack::Auth::AbstractRequest allows remote
        attackers to cause a denial of service via unknown vectors.
    
    CVE-2013-0263
    
        Rack::Session::Cookie allows remote attackers to guess the
        session cookie, gain privileges, and execute arbitrary code via a
        timing attack involving am HMAC comparison function that does not
        run in constant time.
    
    For the oldstable distribution (squeeze), these problems have been fixed in
    version 1.1.0-4+squeeze1.
    
    The stable, testing and unstable distributions do not contain the
    librack-ruby package. They have already been addressed in version
    1.4.1-2.1 of the ruby-rack package.
    
    We recommend that you upgrade your librack-ruby 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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