Vulnerability identifier: #VU47135

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26534

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

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

Vendor: Foxit Software Inc.

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when using the Opt object after it has been deleted by calling Field::ClearItems method while executing Field::DeleteOptions method. A remote attacker can create a specially crafted PDF file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Foxit PDF Editor (formerly Foxit PhantomPDF): 10.0.0.35798 - 10.0.1.35811, 9.0 - 9.7.3.29555

Foxit PDF Reader for Windows: 9.0 - 10.0.1.35811

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External links
http://www.foxitsoftware.com/support/security-bulletins.html#10.1

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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.