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.
[
{
"product": "RubyGems",
"vendor": "HackerOne",
"versions": [
{
"status": "affected",
"version": "Versions before 2.6.13"
}
]
}
]
blog.rubygems.org/2017/08/27/2.6.13-released.html
www.securityfocus.com/bid/100586
www.securitytracker.com/id/1039249
access.redhat.com/errata/RHSA-2017:3485
access.redhat.com/errata/RHSA-2018:0378
access.redhat.com/errata/RHSA-2018:0583
access.redhat.com/errata/RHSA-2018:0585
github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
hackerone.com/reports/218088
lists.debian.org/debian-lts-announce/2018/07/msg00012.html
security.gentoo.org/glsa/201710-01
usn.ubuntu.com/3553-1/
usn.ubuntu.com/3685-1/
www.debian.org/security/2017/dsa-3966