The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template=”/etc/passwd”) or unintended embedded Ruby code execution (such as a string that begins with template=”string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum. Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14001 Reference (s):
- https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
- https://github.com/gettalong/kramdown/compare/REL_2_2_1 REL_2_3_0
- https://kramdown.gettalong.org/news.html
- https://security.netapp.com/advisory/ntap-20200731-0004/
- DEBIAN:DSA-4743