Security Advisory

CVE-2015-4020

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2015-08-25 17:00:00

Last updated 2024-08-06 06:04:02

Assigner mitre

State PUBLISHED

Description

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.

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