ext/session: reject cookie separators in cookie_path and cookie_domain - #22925
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ext/session: reject cookie separators in cookie_path and cookie_domain#22925iliaal wants to merge 1 commit into
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php_session_send_cookie() appends session.cookie_path and session.cookie_domain to the Set-Cookie header verbatim, and neither setting rejected the separators that terminate a cookie attribute. An application could therefore append its own Domain, Path, HttpOnly, Secure, or SameSite attribute through either value. Apply the character set setcookie() already enforces on its $path and $domain options. Closes phpGH-22925
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php_session_send_cookie()appendssession.cookie_pathandsession.cookie_domainto the Set-Cookie header verbatim, and neither setting rejects the characters that terminate a cookie attribute, so an application can append its own Domain, Path, HttpOnly, Secure or SameSite.session_set_cookie_params(['path' => '/; Domain=evil.example'])emitsSet-Cookie: PHPSESSID=<id>; path=/; Domain=evil.example.This applies the byte set
setcookie()already enforces on its $path and $domain options, and does it in the ini handler so that both session_set_cookie_params() and a direct ini_set() are covered. Master only, since it starts rejecting configuration that is accepted today.