Foxit PDF Reader 9.1.0.5096 Javascript Engine use after free

Summaryinfo

A vulnerability has been found in Foxit PDF Reader 9.1.0.5096 and classified as critical. This affects an unknown function of the component Javascript Engine. The manipulation leads to use after free. This vulnerability is referenced as CVE-2018-3960. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foxit PDF Reader 9.1.0.5096 (Document Reader Software). This issue affects an unknown part of the component Javascript Engine. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. A use-after-free condition can occur when accessing the Producer property of the this.info object. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If the browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.

The bug was discovered 10/01/2018. The weakness was published 10/02/2018 (Website). It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2018-3960 since 01/01/2018. 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. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118093 (Foxit Reader < 9.3 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371229 (Foxit Reader and PhantomPDF Multiple Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118093). Similar entries are available at VDB-124607, VDB-124710, VDB-124711 and VDB-124712. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• PDF Reader

Version

• 9.1.0.5096

License

• free

Website

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

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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