جزئیات آسیب‌پذیری

Winter CMS versions before 1.2.13 contain an incomplete fix for a Twig sandbox escape vulnerability in System\\Twig\\SecurityPolicy that allows authenticated backend users with template-editing permissions to bypass sandbox restrictions. Attackers can exploit method forwarding through Eloquent models and query builders using methods like saveQuietly(), deleteQuietly(), increment(), decrement(), and newQuery() to read and modify arbitrary database records, execute arbitrary SQL, and achieve remote code execution by injecting PHP into template code sections.

• https://github.com/wintercms/winter/security/advisories/GHSA-8cfw-pcwh-v63w vendor-advisory
• https://github.com/wintercms/winter/commit/725bbcda232466f7f71381c271c6916573d576e6 patch
• https://www.vulncheck.com/advisories/winter-cms-before-twig-sandbox-escape-via-securitypolicy third-party-advisory