2021-38567 | Foxit PDF Reader/PDF Editor Dictionary Entry null pointer dereference

By Max On Aug 16, 2021

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4.1	$0-$5k	0.32

A vulnerability was found in Foxit PDF Reader and PDF Editor up to 11.0.0 on macOS (Document Reader Software). It has been rated as problematic. Affected by this issue is an unknown function of the component Dictionary Entry Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-476. Impacted is availability. CVE summarizes:

An issue was discovered in Foxit PDF Editor before 11.0.1 and PDF Reader before 11.0.1 on macOS. It mishandles missing dictionary entries, leading to a NULL pointer dereference, aka CNVD-C-2021-95204.

The weakness was released 08/12/2021. The advisory is shared for download at foxitsoftware.com. This vulnerability is handled as CVE-2021-38567 since 08/11/2021. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 11.0.1 eliminates this vulnerability.

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