CVE-2018-9977: Use After Free
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 parsing of Modifier Chain objects in U3D files. 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-5427.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Foxit Readerto a version that resolves this vulnerability.Fixed in 9.0.0.29935Patch ZDI-CAN-5427 - Compensating control
Because user interaction is required (target must visit a malicious page or open a malicious file), restrict or control access to untrusted web content and opening of untrusted files to reduce exposure to malicious U3D content.
Event History
Frequently Asked Questions
What is the severity of CVE-2018-9977?
CVE-2018-9977 is classified as a critical vulnerability allowing remote code execution.
How do I fix CVE-2018-9977?
To mitigate CVE-2018-9977, upgrade Foxit Reader or PhantomPDF to version 9.0.1.1050 or later.
What software is affected by CVE-2018-9977?
CVE-2018-9977 affects Foxit Reader and PhantomPDF versions up to 9.0.1.1049.
What type of attack does CVE-2018-9977 enable?
CVE-2018-9977 enables remote attackers to execute arbitrary code by exploiting user interactions with malicious files.
Is user interaction required to exploit CVE-2018-9977?
Yes, CVE-2018-9977 requires user interaction, as the victim must open a malicious file or visit a malicious page.