Security Features in Ruby - CVE-2015-3900
Published: June 24, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32365
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-3900
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ruby
Affected software:
Ruby
Ruby
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
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."
How to mitigate CVE-2015-3900
Install update from vendor's website.
Sources
- http://blog.rubygems.org/2015/05/14/CVE-2015-3900.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163502.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163600.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164236.html
- 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
- http://www.securityfocus.com/bid/75482
- https://puppet.com/security/cve/CVE-2015-3900
- https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-007/?fid=6356
- https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/