ZDI-19-992: TP-LINK TL-WR841N Web Service http_parser_main Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length static buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TP-Link TL-WR841ND Firmware |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-19-992?
The severity of ZDI-19-992 is critical, as it allows remote code execution without authentication.
How do I fix ZDI-19-992?
To fix ZDI-19-992, update the firmware of your TP-LINK TL-WR841N router to the latest version available.
Can ZDI-19-992 be exploited remotely?
Yes, ZDI-19-992 can be exploited remotely since authentication is not required.
What type of devices are affected by ZDI-19-992?
ZDI-19-992 affects TP-LINK TL-WR841N routers specifically.
What is the impact of ZDI-19-992?
The impact of ZDI-19-992 is the potential for attackers to execute arbitrary code on compromised routers.
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