low3.7

CVE-2023-38499

Information Disclosure due to Out-of-scope Site Resolution

Impact

> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C` (3.5) ### Problem In multi-site scenarios, enumerating the HTTP query parameters `id` and `L` allowed out-of-scope access to rendered content in the website frontend. For instance, this allowed visitors to access content of an internal site by adding handcrafted query parameters to the URL of a site that was publicly available. ### Solution Update to TYPO3 versions 9.5.42 ELTS, 10.4.39 ELTS, 11.5.30, 12.4.4 that fix the problem described above. > ℹ️ **Strong security defaults - Manual actions required** > Resolving sites by the `id` and `L` HTTP query parameters is now denied per default. However, it is still allowed to resolve a particular page by e.g. `https://example.org/?id=123&L=0` - as long as the `page-id 123` is in the scope of the site configured for the `base-url example.org`. > The new feature flag `security.frontend.allowInsecureSiteResolutionByQueryParameters` - which is disabled per default - can be used to reactivate the previous behavior. ### Credits Thanks to Garvin Hicking who reported this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke who fixed the issue. ### References * [TYPO3-CORE-SA-2023-003](https://typo3.org/security/advisory/typo3-core-sa-2023-003)

Affected packages

Ecosystem	Package	Affected	Fixed in
composer	`typo3/cms-core`	>= 9.4.0, < 9.5.42	9.5.42

Affected products

Vendor	Product	Affected versions
Typo3	Typo3	from 9.4.0 before 9.5.42 from 10.0.0 before 10.4.39 from 11.0.0 before 11.5.30 from 12.0.0 before 12.4.4

Weakness classification

CWE-200