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    CVE-2012-5371

    Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.

    Published:Nov 9, 2012
    Last Modified:Apr 11, 2025
    EPS:Nov 28, 2012
    EPSS Score:0.04011
    CVSS Score:5

    Affected Products

    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Ruby-lang
    Product
    Ruby

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://2012.appsec-forum.ch/conferences/#c17
    http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
    http://secunia.com/advisories/51253
    http://securitytracker.com/id?1027747
    http://www.ocert.org/advisories/ocert-2012-001.html
    http://www.osvdb.org/87280
    http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/
    http://www.securityfocus.com/bid/56484
    http://www.ubuntu.com/usn/USN-1733-1
    https://bugzilla.redhat.com/show_bug.cgi?id=875236
    https://exchange.xforce.ibmcloud.com/vulnerabilities/79993
    https://www.131002.net/data/talks/appsec12_slides.pdf
    http://2012.appsec-forum.ch/conferences/#c17
    http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
    http://secunia.com/advisories/51253
    http://securitytracker.com/id?1027747
    http://www.ocert.org/advisories/ocert-2012-001.html
    http://www.osvdb.org/87280
    http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/
    http://www.securityfocus.com/bid/56484
    http://www.ubuntu.com/usn/USN-1733-1
    https://bugzilla.redhat.com/show_bug.cgi?id=875236
    https://exchange.xforce.ibmcloud.com/vulnerabilities/79993
    https://www.131002.net/data/talks/appsec12_slides.pdf

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High