GHSA-mm79-jhqm-9j54
Bypassing Cross-Site Scripting Protection in TYPO3 HTML Sanitizer
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | typo3/html-sanitizer | >= 1.0.0, < 1.5.3 | 1.5.3 |
| Packagist | typo3/html-sanitizer | >= 2.0.0, < 2.1.4 | 2.1.4 |
Details
As written in the advisory (Markdown source, shown as plain text).
> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (4.4)
### Problem
DOM processing instructions are not handled correctly. This allows bypassing the cross-site scripting mechanism of [`typo3/html-sanitizer`](https://packagist.org/packages/typo3/html-sanitizer).
### Solution
Update to `typo3/html-sanitizer` versions 1.5.3 or 2.1.4 that fix the problem described.
### Credits
Thanks to Yaniv Nizry and Niels Dossche who reported this issue, and to TYPO3 core & security team member Oliver Hader who fixed the issue.
### References
* [TYPO3-CORE-SA-2023-007](https://typo3.org/security/advisory/typo3-core-sa-2023-007)
* [Context & Details at `masterminds/html5`](https://github.com/Masterminds/html5-php/issues/241)
References
External links from the advisory. They lead to third-party sites.
- https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-mm79-jhqm-9j54
- https://nvd.nist.gov/vuln/detail/CVE-2023-47125
- https://github.com/TYPO3/html-sanitizer/commit/b8f90717251d968c49dc77f8c1e5912e2fbe0dff
- https://github.com/TYPO3/html-sanitizer
- https://typo3.org/security/advisory/typo3-core-sa-2023-007