CVE-2015-4020
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 3.5%
RubyGems 2.0.x before 2.0.17, 2.2.x before 2.2.5, and 2.4.x before 2.4.8 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 with a domain that is suffixed with the original domain name, aka a "DNS hijack attack." NOTE: this vulnerability exists because to an incomplete fix for CVE-2015-3900.
Affected products
n/a · n/aReferences
http://blog.rubygems.org/2015/06/08/2.2.5-released.htmlhttp://blog.rubygems.org/2015/06/08/2.4.8-released.htmlhttps://github.com/rubygems/rubygems/commit/5c7bfb5https://puppet.com/security/cve/CVE-2015-3900https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-009/?fid=6478https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlhttp://www.securityfocus.com/bid/75431