Debian Security Advisory 3276-1

Debian Linux Security Advisory 3276-1 – Jakub Zalas discovered that Symfony, a framework to create websites and web applications, was vulnerable to restriction bypass. It was affecting applications with ESI or SSI support enabled, that use the FragmentListener. A malicious user could call any controller via the /_fragment path by providing an invalid hash in the URL (or removing it), bypassing URL signing and security rules.

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