dompdf.php in dompdf before 0.6.1, when DOMPDF_ENABLE_PHP is enabled, allows context-dependent attackers to bypass chroot protections and read arbitrary files via a PHP protocol and wrappers in the input_file parameter, as demonstrated by a php://filter/read=convert.base64-encode/resource in the input_file parameter.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-2383
• dompdf/dompdf@23a6939
• http://seclists.org/fulldisclosure/2014/Apr/258
• https://github.com/FriendsOfPHP/security-advisories/blob/master/dompdf/dompdf/CVE-2014-2383.yaml
• https://web.archive.org/web/20151215023329/http://www.securityfocus.com/archive/1/531912/100/0/threaded