CVE-2015-4020

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…

published August 25, 2015

CVSS
—
EPSS
3%
Percentile
88.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03461 · 88.9th percentile
Published
2015-08-25T17:00Z
EPSS history
Timeline
  • 25 AUG 17:00Z
    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…
    cvelistv5