Description
RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls.
References (14)
Core 14
Core References
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3685-1/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3553-1/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0585
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2017/dsa-3966
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0378
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1039249
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:3485
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0583
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201710-01
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/100586
Exploit, Patch, Third Party Advisory x_refsource_misc
https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/218088
Patch, Vendor Advisory x_refsource_misc
http://blog.rubygems.org/2017/08/27/2.6.13-released.html
Scores
CVSS v3
8.1
EPSS
0.0521
EPSS Percentile
90.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-346
CWE-350
Status
published
Products (18)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
17.10
debian/debian_linux
8.0
debian/debian_linux
9.0
HackerOne/RubyGems
Versions before 2.6.13
redhat/enterprise_linux_desktop
7.0
redhat/enterprise_linux_server
7.0
redhat/enterprise_linux_server_aus
7.4
redhat/enterprise_linux_server_aus
7.6
... and 8 more
Published
Aug 31, 2017
Tracked Since
Feb 18, 2026