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  • [SECURITY] [DSA 2783-1] librack-ruby security update

    From Thijs Kinkhorst@1:229/2 to All on Mon Oct 21 21:30:03 2013
    From: [email protected]

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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-2783-1 [email protected] http://www.debian.org/security/ Thijs Kinkhorst October 21, 2013 http://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : librack-ruby
    Vulnerability : several
    Problem type : remote
    Debian-specific: no
    CVE ID : CVE-2011-5036 CVE-2013-0184 CVE-2013-0263
    Debian Bug : 653963 698440 700226

    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: http://www.debian.org/security/

    Mailing list: [email protected]
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