[DRE-maint] Bug#1030047: ruby-sanitize: CVE-2023-23627

[Moritz Mühlenhoff]

Source: ruby-sanitize
X-Debbugs-CC: team at security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for ruby-sanitize.

CVE-2023-23627[0]:
| Sanitize is an allowlist-based HTML and CSS sanitizer. Versions 5.0.0
| and later, prior to 6.0.1, are vulnerable to Cross-site Scripting.
| When Sanitize is configured with a custom allowlist that allows
| `noscript` elements, attackers are able to include arbitrary HTML,
| resulting in XSS (cross-site scripting) or other undesired behavior
| when that HTML is rendered in a browser. The default configurations do
| not allow `noscript` elements and are not vulnerable. This issue only
| affects users who are using a custom config that adds `noscript` to
| the element allowlist. This issue has been patched in version 6.0.1.
| Users who are unable to upgrade can prevent this issue by using one of
| Sanitize's default configs or by ensuring that their custom config
| does not include `noscript` in the element allowlist.

https://github.com/rgrove/sanitize/security/advisories/GHSA-fw3g-2h3j-qmm7

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-23627
    https://www.cve.org/CVERecord?id=CVE-2023-23627

Please adjust the affected versions in the BTS as needed.