#VU48904 Out-of-bounds write in Foxit PDF Reader for Windows and Foxit PDF Editor (formerly Foxit PhantomPDF) - CVE-2020-27860

Vulnerability identifier: #VU48904

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-27860

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 while processing certain XFA templates. 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 - 10.1.0.37527

Foxit PDF Editor (formerly Foxit PhantomPDF): 9.0 - 9.7.4.29600, 10.0.0.35798 - 10.1.0.37527

---

External links
https://www.foxitsoftware.com/support/security-bulletins.html
https://www.zerodayinitiative.com/advisories/ZDI-20-1415/

---

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.