CVE-2015-3900

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    CVE-2015-3900

    Published: 24 Jun 2015Last Modified: 16 Apr 2026

    Summary:

    Details: RubyGems 2.0.x before 2.0.16, 2.2.x before 2.2.4, and 2.4.x before 2.4.7 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack attack."

    References: http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html, http://rhn.redhat.com/errata/RHSA-2015-1657.html, http://www.openwall.com/lists/oss-security/2015/06/26/2, http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html, https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-007/?fid=6356, https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/, http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163502.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163600.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164236.html, http://www.securityfocus.com/bid/75482, https://puppet.com/security/cve/CVE-2015-3900

    Affected packages

    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
    CVE-2015-3900 | CVE-DB