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CVE-2021-28834

Status Candidate

Overview

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.

Related Files

Ubuntu Security Notice USN-6424-1
Posted Oct 10, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6424-1 - It was discovered that kramdown did not restrict Rouge formatters to the correct namespace. An attacker could use this issue to cause kramdown to execute arbitrary code.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-28834
SHA-256 | cb84ed93ee82dec6af195f72986f8154e0b895e8bab9ab6209eb559862c1420d
Download | Favorite | View
Debian Security Advisory 4890-1
Posted Apr 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4890-1 - Stan Hu discovered that kramdown, a pure Ruby Markdown parser and converter, performed insufficient namespace validation of Rouge syntax highlighting formatters.

tags | advisory, ruby
systems | linux, debian
advisories | CVE-2021-28834
SHA-256 | 60fe6ac5fd6c7b4347f726fe140eae03e02e88ad5e42ce04e067b8d63dd4276d
Download | Favorite | View
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