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.

Remediation

References

CVE-2015-4020

Related Vulnerabilities

AngularJS Inefficient Regular Expression Complexity Vulnerability (CVE-2023-26116)

WordPress Plugin BackWPup Cross-Site Scripting (3.2.5)

Apache Traffic Server Improper Input Validation Vulnerability (CVE-2018-8022)

Chamilo Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2018-20328)

Sqlite Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2019-19925)

Severity

Medium

Classification

CVE-2015-4020 CWE-20

Tags

Missing Update Known Vulnerabilities