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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTUycDktdjc0NC1td2pq

Remote code execution in Kramdown

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

Permalink: https://github.com/advisories/GHSA-52p9-v744-mwjj
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTUycDktdjc0NC1td2pq
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 3 years ago
Updated: about 1 year ago


CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-52p9-v744-mwjj, CVE-2021-28834
References: Repository: https://github.com/gettalong/kramdown

Affected Packages

rubygems:kramdown
Dependent packages: 642
Dependent repositories: 485,485
Downloads: 145,119,337 total
Affected Version Ranges: >= 1.16.0, < 2.3.1
Fixed in: 2.3.1
All affected versions: 1.16.0, 1.16.1, 1.16.2, 1.17.0, 2.0.0, 2.1.0, 2.2.0, 2.2.1, 2.3.0
All unaffected versions: 0.1.0, 0.2.0, 0.3.0, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.1, 0.13.2, 0.13.3, 0.13.4, 0.13.5, 0.13.6, 0.13.7, 0.13.8, 0.14.0, 0.14.1, 0.14.2, 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.2.0, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.4.0, 1.4.1, 1.4.2, 1.5.0, 1.6.0, 1.7.0, 1.8.0, 1.9.0, 1.10.0, 1.11.0, 1.11.1, 1.12.0, 1.13.0, 1.13.1, 1.13.2, 1.14.0, 1.15.0, 2.3.1, 2.3.2, 2.4.0