CVE-2023-38500
By-passing Cross-Site Scripting Protection in HTML Sanitizer
Impact
> ### 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 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`](https://packagist.org/packages/typo3/html-sanitizer). ### Solution Update to `typo3/html-sanitizer` versions 1.5.1 or 2.1.2 that fix the problem described. ### Credits Thanks to David Klein and Yaniv Nizry who reported this issue, and to TYPO3 security team members Oliver Hader and Benjamin Franzke who fixed the issue. ### References * [TYPO3-CORE-SA-2023-002](https://typo3.org/security/advisory/typo3-core-sa-2023-002)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | typo3/html-sanitizer | >= 1.0.0, < 1.5.1 | 1.5.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Typo3 | Html Sanitizer | from 1.0.0 before 1.5.1 from 2.0.0 before 2.1.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdb
- https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6g
- https://typo3.org/security/advisory/typo3-core-sa-2023-002
- https://github.com/advisories/GHSA-59jf-3q9v-rh6g
- https://nvd.nist.gov/vuln/detail/CVE-2023-38500