TP-Link TL-WR940N httpd httpRpmFs Stack-based Buffer Overflow Remote Code Execution Vulnerability
February 10th, 2022
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the parsing of file name extensions. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
Additional Details
Fixed in firmware 211111
Disclosure Timeline
- 2021-10-21 - Vulnerability reported to vendor
- 2022-02-10 - Coordinated public release of advisory
Credit
Vadym Kolisnichenko
