ZDI-21-526: Foxit Reader U3D File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit Reader. 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 U3D objects embedded in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Foxit PDF Reader |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-526?
The severity of ZDI-21-526 is assessed as critical due to its potential for remote information disclosure.
How do I fix ZDI-21-526?
To fix ZDI-21-526, update to the latest version of Foxit Reader provided by the vendor.
What impacts does ZDI-21-526 have on users?
ZDI-21-526 can allow remote attackers to disclose sensitive information from users who interact with malicious content.
Is user interaction needed to exploit ZDI-21-526?
Yes, user interaction is required to exploit ZDI-21-526 by visiting a malicious page or opening a malicious file.
What software is affected by ZDI-21-526?
ZDI-21-526 affects Foxit Reader installations.
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- source/ZDI
- alias/ZDI-21-526
- alias/ZDI-CAN-12936
- alias/CVE-2021-31469
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/foxit
- canonical/foxit pdf reader