Moderate severityNVD Advisory· Published Jul 25, 2023· Updated Oct 10, 2024
By-passing Cross-Site Scripting Protection in HTML Sanitizer
CVE-2023-38500
Description
TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cross-site-scripting-safe markup based on explicitly allowed tags, attributes and values. Starting in version 1.0.0 and prior to versions 1.5.1 and 2.1.2, due to an encoding issue in the serialization layer, malicious markup nested in a noscript element was not encoded correctly. noscript is disabled in the default configuration, but might have been enabled in custom scenarios. This allows bypassing the cross-site scripting mechanism of TYPO3 HTML Sanitizer. Versions 1.5.1 and 2.1.2 fix the problem.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
typo3/html-sanitizerPackagist | >= 1.0.0, < 1.5.1 | 1.5.1 |
typo3/html-sanitizerPackagist | >= 2.0.0, < 2.1.2 | 2.1.2 |
Affected products
2- TYPO3/html-sanitizerv5Range: >= 1.0.0, < 1.5.1
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-59jf-3q9v-rh6gghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-38500ghsaADVISORY
- github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdbghsax_refsource_MISCWEB
- github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6gghsax_refsource_CONFIRMWEB
- typo3.org/security/advisory/typo3-core-sa-2023-002ghsax_refsource_MISCWEB
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