CVE Vulnerabilities

CVE-2022-37377

Access of Resource Using Incompatible Type ('Type Confusion')

Published: Mar 29, 2023 | Modified: Apr 06, 2023
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor 11.1.1.53537;. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within JavaScript optimizations. The issue results from an improper optimization, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16733.

Weakness

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected Software

Name Vendor Start Version End Version
Pdf_editor Foxit * 10.1.9 (excluding)
Pdf_editor Foxit 11.0.0 (including) 11.2.3 (excluding)
Pdf_editor Foxit 12.0.0.12394 (including) 12.0.0.12394 (including)
Pdf_reader Foxit * 12.0.1 (excluding)

Extended Description

When the product accesses the resource using an incompatible type, this could trigger logical errors because the resource does not have expected properties. In languages without memory safety, such as C and C++, type confusion can lead to out-of-bounds memory access. While this weakness is frequently associated with unions when parsing data with many different embedded object types in C, it can be present in any application that can interpret the same variable or memory location in multiple ways. This weakness is not unique to C and C++. For example, errors in PHP applications can be triggered by providing array parameters when scalars are expected, or vice versa. Languages such as Perl, which perform automatic conversion of a variable of one type when it is accessed as if it were another type, can also contain these issues.

References