Foxit Reader 9.0.1.1049 ConvertToPdf_x86.dll input validation

Summaryinfo

A vulnerability was found in Foxit Reader 9.0.1.1049. It has been rated as critical. This impacts an unknown function in the library ConvertToPdf_x86.dll. The manipulation leads to input validation. This vulnerability is traded as CVE-2018-9971. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foxit Reader 9.0.1.1049 (Document Reader Software). This issue affects an unknown function in the library ConvertToPdf_x86.dll. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.0.1.104. 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 ConvertToPDF_x86.dll. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-5754.

The bug was discovered 04/20/2018. The weakness was shared 05/17/2018 as confirmed security bulletin (Website). The advisory is shared at foxitsoftware.com. The identification of this vulnerability is CVE-2018-9971 since 04/10/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 27 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370903 (Foxit Reader Multiple Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-82783, VDB-82784, VDB-82785 and VDB-82786 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• Reader

Version

• 9.0.1.1049

License

• free

Website

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

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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