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CVE-2020-14001

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4562-2
Posted Oct 27, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4562-2 - It was discovered that kramdown insecurely handled certain crafted input. An attacker could use this vulnerability to read restricted files or execute arbitrary code.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-14001
SHA-256 | c0cf550aa1577dcf4dcad242a2598aa387ec2061b23663dabc55578cc21a0ea4
Ubuntu Security Notice USN-4562-1
Posted Oct 1, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4562-1 - It was discovered that kramdown insecurely handled certain crafted input. An attacker could use this vulnerability to read restricted files or execute arbitrary code.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-14001
SHA-256 | 62f0c26bbb23123bf9326efedc77a112b6e22035fceb3025dbcd8e5461912b92
Debian Security Advisory 4743-1
Posted Aug 10, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4743-1 - A flaw was discovered in ruby-kramdown, a fast, pure ruby, Markdown parser and converter, which could result in unintended read access to files or unintended embedded Ruby code execution when the {::options /} extension is used together with the 'template' option.

tags | advisory, code execution, ruby
systems | linux, debian
advisories | CVE-2020-14001
SHA-256 | 6bc52df88c96692e59b5c7202800ee946dcb53dad8e3bb0a1c3b8d8e00c387df
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