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CVE-2015-3900

Good to know:

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Date: June 24, 2015

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."

Language: Ruby

Severity Score

Related Resources (18)

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://nvd.nist.gov/vuln/detail/CVE-2015-3900
https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900
http://www.securityfocus.com/bid/75482
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163600.html
https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/
https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-007/?fid=6356
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163502.html
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2015-3900.yml
http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html
https://access.redhat.com/security/cve/CVE-2015-3900
http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164236.html
https://puppet.com/security/cve/CVE-2015-3900
https://web.archive.org/web/20170331091241/https://puppet.com/security/cve/CVE-2015-3900
https://web.archive.org/web/20200228055155/http://www.securityfocus.com/bid/75482
https://www.mend.io/vulnerability-database/CVE-2015-3900

Severity Score

Weakness Type (CWE)

Security Features

CWE-254

Reliance on Reverse DNS Resolution for a Security-Critical Action

CWE-350

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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