SRC-2018-0020 : Foxit Reader Signature Field lineWidth Use-After-Free Remote Code Execution Vulnerability
Foxit Reader and Foxit PhantomPDF
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.
Foxit has issued an update to correct these vulnerabilities. More details can be found at:
- 2018-03-30 – Verified and acquired by iDefense
- 2018-04-27 – Coordinated public release of advisory
This vulnerability was discovered by Steven Seeley of Source Incite
Source Incite would like to acknowledge iDefense's Vulnerability Contributor Program for the help with co-ordination of this vulnerability.