SRC-2018-0020 : Foxit Reader Signature Field lineWidth Use-After-Free Remote Code Execution Vulnerability

CVE ID:

CVE-2018-10303

CVSS Score:

6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)

Affected Vendors:

Foxit

Affected Products:

Foxit Reader and Foxit PhantomPDF

Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists when setting the lineWidth property within a Signature Field. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under the context of the current process.

Vendor Response:

Foxit has issued an update to correct these vulnerabilities. More details can be found at:
https://www.foxitsoftware.com/support/security-bulletins.php

Disclosure Timeline:

• 2018-03-30 – Verified and acquired by iDefense
• 2018-04-27 – Coordinated public release of advisory

Credit:

This vulnerability was discovered by Steven Seeley of Source Incite

Acknowledgments:

Source Incite would like to acknowledge iDefense's Vulnerability Contributor Program for the help with co-ordination of this vulnerability.