CVE-2021-31454: Foxit Reader XFA leadDigits Heap-based Buffer Overflow Remote Code Execution Vulnerability
First published: Fri May 07 2021(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 the Decimal element. A crafted leadDigits value in a Decimal element can trigger an overflow of a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current process. Was ZDI-CAN-13095.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxitsoftware Foxit Reader | <=10.1.3.37598 | |
| Foxitsoftware Phantompdf | <=9.7.5.29616 | |
| Foxitsoftware Phantompdf | >=10.0.0.0<=10.1.3.37598 | |
| Microsoft Windows |
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Reference Links
Frequently Asked Questions
What is CVE-2021-31454?
CVE-2021-31454 is a vulnerability in Foxit Reader that allows remote attackers to execute arbitrary code on affected installations.
How severe is CVE-2021-31454?
CVE-2021-31454 has a severity score of 7.8 (high severity).
How can this vulnerability be exploited?
To exploit CVE-2021-31454, the target must visit a malicious page or open a malicious file, which requires user interaction.
Which versions of Foxit Reader are affected?
Foxit Reader versions up to and including 10.1.3.37598 are affected by CVE-2021-31454.
Is Microsoft Windows affected by this vulnerability?
No, Microsoft Windows is not affected by CVE-2021-31454.
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