James Kettle, Alain Tiemblo, Christophe Coevoet and Fabien Potencier discovered that twig, a templating engine for PHP, did not correctly process its input. End users allowed to submit twig templates could use specially crafted code to trigger remote code execution, even in sandboxed templates. For the stable distribution (jessie), this problem has been fixed in version 1.16.2-1+deb8u1. For the testing (stretch) and unstable (sid) distributions, this problem has been fixed in version 1.20.0-1. We recommend that you upgrade your twig packages.
James Kettle, Alain Tiemblo, Christophe Coevoet and Fabien Potencier discovered that twig, a templating engine for PHP, did not correctly process its input. End users allowed to submit twig templates could use specially crafted code to trigger remote code execution, even in sandboxed templates.
For the stable distribution (jessie), this problem has been fixed in version 1.16.2-1+deb8u1.
For the testing (stretch) and unstable (sid) distributions, this problem has been fixed in version 1.20.0-1.
We recommend that you upgrade your twig packages.