Foxit Reader 9.0.1.1049 Textbox use after free

Summaryinfo

A vulnerability has been found in Foxit Reader 9.0.1.1049 and classified as critical. Impacted is an unknown function of the component Textbox Handler. This manipulation causes use after free. This vulnerability is registered as CVE-2018-9967. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Foxit Reader 9.0.1.1049 (Document Reader Software). It has been declared as critical. Affected by this vulnerability is an unknown part of the component Textbox 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. The summary by CVE is:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.1049. 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 actions of TextBox 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 under the context of the current process. Was ZDI-CAN-5571.

The bug was discovered 04/20/2018. The weakness was published 05/17/2018 as confirmed security bulletin (Website). The advisory is shared at foxitsoftware.com. This vulnerability is known as CVE-2018-9967 since 04/10/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly 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.

Similar entries are available at VDB-82783, VDB-82784, VDB-82785 and VDB-82786. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• Reader

Version

• 9.0.1.1049

License

• free

Website

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

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion