Foxit Reader 9.0.0.29935 ComboBox Field use after free

Summaryinfo

A vulnerability was found in Foxit Reader 9.0.0.29935. It has been declared as critical. Affected is an unknown function of the component ComboBox Field Handler. The manipulation results in use after free. This vulnerability is reported as CVE-2018-11617. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Foxit Reader 9.0.0.29935 (Document Reader Software). It has been classified as critical. Affected is some unknown processing of the component ComboBox Field Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. 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 Format events for ComboBox fields. 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 under the context of the current process. Was ZDI-CAN-5415.

The bug was discovered 07/19/2018. The weakness was disclosed 07/31/2018 (Website). The advisory is shared for download at foxitsoftware.com. This vulnerability is traded as CVE-2018-11617 since 05/31/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k.

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 pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• Reader

Version

• 9.0.0.29935

License

• free

Website

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

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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