Improper Validation of Array Index in Foxit PDF Editor (formerly Foxit PhantomPDF) and Foxit PDF Reader for Windows - CVE-2020-28203
Published: December 9, 2020 / Updated: December 30, 2020
Vulnerability identifier: #VU48903
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-28203
CWE-ID: CWE-129
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to array overflow as the illegal value in the /Size entry causes an
error in initializing the array size for storing the compression object
streams, and an object number which is larger than the initialization
value is used as the array index while parsing the cross-reference
streams. A remote attacker can create a specially crafted PDF file, trick the victim into opening it and crash the application.
Affected software
Foxit PDF Editor (formerly Foxit PhantomPDF)
Foxit PDF Reader for Windows
Foxit PDF Reader for Windows
How to mitigate CVE-2020-28203
Install updates from vendor's website.
Foxit PDF Editor (formerly Foxit PhantomPDF) - addressed in versions 9.7.5.29616, 10.1.1.37576
Foxit PDF Reader for Windows - update to 10.1.1.37576
Foxit PDF Reader for Windows - update to 10.1.1.37576