CVE-2018-3943: Use After Free
First published: Tue Oct 02 2018(Updated: )
An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. A specially crafted PDF document can trigger a previously freed object in memory to be reused, resulting in arbitrary code execution. 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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxit PhantomPDF | <=9.2.0.9297 | |
| Foxit Reader | <=9.2.0.9297 | |
| Microsoft Windows Operating System |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-3943?
CVE-2018-3943 is considered a high-severity vulnerability due to the potential for arbitrary code execution.
How do I fix CVE-2018-3943?
To fix CVE-2018-3943, update Foxit Software PDF Reader or PhantomPDF to version 9.2.0.9297 or later.
What types of software are affected by CVE-2018-3943?
CVE-2018-3943 affects Foxit Reader and Foxit PhantomPDF versions up to 9.2.0.9297.
What kind of attack is possible with CVE-2018-3943?
An attacker can exploit CVE-2018-3943 by crafting a malicious PDF that triggers a use-after-free condition.
Who is vulnerable to CVE-2018-3943?
Users of Foxit Software's PDF Reader or PhantomPDF prior to version 9.2.0.9297 are vulnerable to CVE-2018-3943.
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