ZDI-21-556: 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 files embedded in PDF documents. 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-21-556?
The severity of ZDI-21-556 is considered to be moderate, as it requires user interaction for exploitation.
How do I fix ZDI-21-556?
To fix ZDI-21-556, update Foxit Reader to the latest version provided by the vendor.
What type of information can be disclosed due to ZDI-21-556?
ZDI-21-556 can lead to the disclosure of sensitive information if successfully exploited.
Do I need to take immediate action for ZDI-21-556?
Yes, it's advisable to take immediate action by updating Foxit Reader to mitigate the risks associated with ZDI-21-556.
What is the attack vector for ZDI-21-556?
ZDI-21-556 is exploited through user interaction by visiting a malicious webpage or opening a malicious file.
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- source/ZDI
- alias/ZDI-21-556
- alias/ZDI-CAN-13621
- alias/CVE-2021-31467
- agent/software-canonical-lookup
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- vendor/foxit
- canonical/foxit pdf reader