CVE-2018-9955: Use After Free
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 XFA resolveNode method of Button elements. 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-5531.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Foxit Readerto a version that resolves this vulnerability.Fixed in 9.0.1.1049 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch ZDI-CAN-5531
Event History
Frequently Asked Questions
What is the severity of CVE-2018-9955?
CVE-2018-9955 is rated as critical due to the potential for remote code execution.
How do I fix CVE-2018-9955?
To fix CVE-2018-9955, update Foxit Reader or Foxit PhantomPDF to the latest version beyond 9.0.1.1049.
What attack vector is used in CVE-2018-9955?
CVE-2018-9955 requires user interaction, as the victim must visit a malicious page or open a malicious file.
Which versions of Foxit Reader are affected by CVE-2018-9955?
CVE-2018-9955 affects Foxit Reader versions up to and including 9.0.1.1049.
Can CVE-2018-9955 be exploited without user interaction?
No, CVE-2018-9955 cannot be exploited without user interaction.