Arbitrary code execution (via backdoor code) was discovered in bootstrap-sass 3.2.0.3, when downloaded from rubygems.org. An unauthenticated attacker can craft the ___cfduid cookie value with base64 arbitrary code to be executed via eval(), which can be leveraged to execute arbitrary code on the target system. Note that there are three underscore characters in the cookie name. This is unrelated to the __cfduid cookie that is legitimately used by Cloudflare. Upstream issue: https://github.com/twbs/bootstrap-sass/issues/1195 References: https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/ https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 https://www.cyberscoop.com/bootstrap-sass-infected-snyk-rubygems/
Created rubygem-bootstrap-sass tracking bugs for this issue: Affects: fedora-all [bug 1697483]
Statement: Red Hat CloudForms is not affected by this issue, since the only affected version of bootstrap-sass gem is the 3.2.0.3 and CloudForms only ships version 3.3.7.