Vulnerability identifier: #VU9133

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-843

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Foxit PDF Reader for Windows
Client/Desktop applications / Office applications
Foxit PDF Editor (formerly Foxit PhantomPDF)
Client/Desktop applications / Office applications

Vendor: Foxit Software Inc.

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to type confusion error. A remote attacker can execute certain XFA FormCalc functions in crafted PDF files since the application could transform non-CXFA_Object to CXFA_Object by force without judging the data type and use the discrepant CXFA_Object directly.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update Foxit Reader to version 9.0.
Update Foxit PhantomPDF to version 8.3.5.

Vulnerable software versions

Foxit PDF Reader for Windows: 7.3.0.118 - 8.3.2.25013

Foxit PDF Editor (formerly Foxit PhantomPDF): 8.0 - 8.3.2.25013, 7.3.0.118 - 7.3.15.712

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External links
http://www.foxitsoftware.com/support/security-bulletins.php

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.