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Security Advisories: GSA_kwCzR0hTQS1odnd4LXFoMmgteGNmas4AAwSV
TYPO3 HTML Sanitizer vulnerable to Cross-Site Scripting
Problem
Due to a parsing issue in the upstream package masterminds/html5
, malicious markup used in a sequence with special HTML CDATA sections cannot be filtered and sanitized. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer
.
Besides that, the upstream package masterminds/html5
provides HTML raw text elements (script
, style
, noframes
, noembed
and iframe
) as DOMText nodes, which were not processed and sanitized further. None of the mentioned elements were defined in the default builder configuration, that's why only custom behaviors, using one of those tag names, were vulnerable to cross-site scripting.
Solution
Update to typo3/html-sanitizer
versions 1.5.0 or 2.1.1 that fix the problem described.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1odnd4LXFoMmgteGNmas4AAwSV
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 6 months ago
Updated: 4 months ago
CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Identifiers: GHSA-hvwx-qh2h-xcfj, CVE-2022-23499
References:
- https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-hvwx-qh2h-xcfj
- https://github.com/TYPO3/html-sanitizer/pull/105
- https://github.com/TYPO3/html-sanitizer/pull/106
- https://github.com/TYPO3/html-sanitizer/releases/tag/v1.5.0
- https://github.com/TYPO3/html-sanitizer/releases/tag/v2.1.1
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2022-23499.yaml
- https://typo3.org/security/advisory/typo3-core-sa-2022-017
- https://nvd.nist.gov/vuln/detail/CVE-2022-23499
- https://github.com/advisories/GHSA-hvwx-qh2h-xcfj
Affected Packages
packagist:typo3/cms
Versions: >= 12.0.0, < 12.1.1, >= 11.0.0, < 11.5.20, >= 10.0.0, < 10.4.33Fixed in: 12.1.1, 11.5.20, 10.4.33
packagist:typo3/html-sanitizer
Versions: >= 2.0.0, < 2.1.1, >= 1.0.0, < 1.5.0Fixed in: 2.1.1, 1.5.0