CVE-2021-34836: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability
First published: Wed Aug 04 2021(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation 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 in the context of the current process. Was ZDI-CAN-14017.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxit PDF Reader | <=11.0.0.49893 | |
| Foxitsoftware Pdf Editor | <=10.1.4.37651 | |
| Foxitsoftware Pdf Editor | =11.0.0.49893 | |
| Microsoft Windows | ||
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Reference Links
Frequently Asked Questions
What is CVE-2021-34836?
CVE-2021-34836 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893.
How can CVE-2021-34836 be exploited?
To exploit CVE-2021-34836, user interaction is required as the target must visit a malicious page or open a malicious file.
What is the severity of CVE-2021-34836?
CVE-2021-34836 has a severity score of 7.8 (high).
What software is affected by CVE-2021-34836?
The affected software includes Foxit PDF Reader 11.0.0.49893 and Foxitsoftware Pdf Editor 10.1.4.37651, as well as Microsoft Windows (not vulnerable).
How can the CVE-2021-34836 vulnerability be mitigated?
To mitigate the CVE-2021-34836 vulnerability, users should update to the latest version of Foxit PDF Reader or Foxitsoftware Pdf Editor.
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