RubyGems versions 2.6.12 and earlier fail to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem.
blog.rubygems.org/2017/08/27/2.6.13-released.html
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
github.com/rubygems/rubygems/commit/ad5c0a53a86ca5b218c7976765c0365b91d22cb2
hackerone.com/reports/243156
lists.debian.org/debian-lts-announce/2018/07/msg00012.html
nvd.nist.gov/vuln/detail/CVE-2017-0901
security.gentoo.org/glsa/201710-01
usn.ubuntu.com/3553-1
usn.ubuntu.com/3685-1
web.archive.org/web/20170907215801/www.securitytracker.com/id/1039249
web.archive.org/web/20170915000000*/www.securityfocus.com/bid/100580#:~:text=1%20snapshot-,16%3A05%3A26,-Note
www.debian.org/security/2017/dsa-3966
www.exploit-db.com/exploits/42611