Vulnerability identifier: #VU47137

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-2020-26535

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the V8 JavaScript engine, which is resulted from the failure to properly handle the situation where the Index returned during the allocation of thread local storage by TslAlloc function exceeds the limits acceptable by the V8 JavaScript engine. A remote attacker can create a specially crafted PDF file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Foxit PDF Reader for Windows: 9.0 - 10.0.1.35811

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

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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.