GHSA-gx69-6cp4-hxrj

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GHSA-gx69-6cp4-hxrj

Summary: RubyGems Link Following vulnerability

Details: RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in `install_location` function of `package.rb` that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6.

References: https://nvd.nist.gov/vuln/detail/CVE-2018-1000073, https://github.com/rubygems/rubygems/commit/1b931fc03b819b9a0214be3eaca844ef534175e2, https://github.com/jruby/jruby/commit/0b06b48ab4432237ce5fc1bef47f2c6bcf7843f7, https://www.debian.org/security/2018/dsa-4259, https://www.debian.org/security/2018/dsa-4219, https://usn.ubuntu.com/3621-1, https://lists.debian.org/debian-lts-announce/2018/08/msg00028.html, https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2018-1000073.yml, https://github.com/rubygems/rubygems, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925986, https://access.redhat.com/errata/RHSA-2020:0663, https://access.redhat.com/errata/RHSA-2020:0591, https://access.redhat.com/errata/RHSA-2020:0542, https://access.redhat.com/errata/RHSA-2019:2028, https://access.redhat.com/errata/RHSA-2018:3731, https://access.redhat.com/errata/RHSA-2018:3730, https://access.redhat.com/errata/RHSA-2018:3729, http://blog.rubygems.org/2018/02/15/2.7.6-released.html, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html