A vulnerability classified as critical was found in Foxit PDF Editor 11.0.0.49893. This vulnerability affects some unknown functionality of the component Square Annotation Handler. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Foxit PDF Editor Square Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. 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 the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14360.

The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2021-34959 since 06/17/2021. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

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Vendor

• Foxit

Name

• PDF Editor

Version

• 11.0.0.49893

License

• free

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• 🔍

CPE 2.2info

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