Summaryinfo

A vulnerability labeled as problematic has been found in Foxit Reader up to 9.4.1. The affected element is the function resetForm of the component AcroForms Handler. Executing a manipulation can lead to use after free. This vulnerability is tracked as CVE-2019-6770. The attack can be launched remotely. No exploit exists. The affected component should be upgraded. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability has been found in Foxit Reader up to 9.4.1 (Document Reader Software) and classified as problematic. This vulnerability affects the function resetForm of the component AcroForms 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. CVE summarizes:

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.1.16828. 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 resetForm method when processing AcroForms. 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 in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-8229.

The bug was discovered 04/29/2019. The weakness was disclosed 06/03/2019. This vulnerability was named CVE-2019-6770 since 01/24/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 35 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 9.4.1.16828 eliminates this vulnerability.

The entries VDB-135925, VDB-135924, VDB-135923 and VDB-135921 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• Reader

Version

• 9.4.0
• 9.4.1

License

• free

Website

• Vendor: https://www.foxitsoftware.com/

CPE 2.3info

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CPE 2.2info

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