ZDI-21-084: Tencent WeChat WXAM Decoder Out-Of-Bounds Access Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat. 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 WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tencent Wechat |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-084?
ZDI-21-084 is classified as a critical vulnerability due to its ability to allow remote code execution.
How do I fix ZDI-21-084?
To mitigate ZDI-21-084, update Tencent WeChat to the latest version provided by the vendor.
What are the potential impacts of ZDI-21-084?
Exploitation of ZDI-21-084 can lead to unauthorized remote code execution on affected installations.
What type of user interaction is needed for ZDI-21-084?
Users must visit a malicious page or open a malicious file for ZDI-21-084 to be exploited.
Which software is affected by ZDI-21-084?
ZDI-21-084 affects installations of Tencent WeChat specifically.
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