Provide references for CVE-2015-7809.
Where can I find more information about CVE-2015-7809?
References are available at: https://github.com/twigphp/Twig/pull/1759, http://www.debian.org/security/2015/dsa-3343, http://symfony.com/blog/security-release-twig-1-20-0, https://github.com/fabpot/Twig/commit/30be07759a3de2558da5224f127d052ecf492e8f, http://openwall.com/lists/oss-security/2015/10/11/2, http://openwall.com/lists/oss-security/2015/08/21/3.