TP-Link Archer A54 libcmm.so dm_fillObjByStr Stack-based Buffer Overflow Remote Code Execution Vulnerability
November 14th, 2023
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A54 routers. Authentication is required to exploit this vulnerability.
The specific flaw exists within the file libcmm.so. 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 TL-WR902AC(EU)_V1_231027 and TL-WR902AC(US)_V1_231025
https://www.tp-link.com/en/support/download/tl-wr902ac/v1/#Firmware
https://www.tp-link.com/us/support/download/tl-wr902ac/v1/#Firmware
Disclosure Timeline
- 2023-10-03 - Vulnerability reported to vendor
- 2023-11-14 - Coordinated public release of advisory
Credit
Nicholas Zubrisky and Peter Girnus of Trend Micro's Zero Day Initiative
