Vulnerability identifier: #VU7987

Vulnerability risk: Medium

CVSSv3.1: 7.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-10951

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Foxit PDF Reader for Windows
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 in app.launchURL method due to insufficient validation of user-supplied string before using it to execute a system call. A remote attacker can send a specially crafted .pdf file, trick the victim into opening it, inject malicious commands and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise however requires that attacker is able to bypass Safe Reading Mode.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Foxit PDF Reader for Windows: 7.3.0.118 - 8.3.1

---

External links
http://www.zerodayinitiative.com/advisories/ZDI-17-691/
http://www.zerodayinitiative.com/blog/2017/8/17/busting-myths-in-foxit-reader

---

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.