Advisory Details

December 19th, 2023

TP-Link TL-WR902AC dm_fillObjByStr Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2023-50225
CVSS SCORE	6.8, AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	TP-Link
AFFECTED PRODUCTS	TL-WR902AC
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR902AC routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the libcmm.so module. 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	TP-Link has issued an update to correct this vulnerability. More details can be found at: https://www.tp-link.com/ca/support/download/tl-wr902ac/v3/#Firmware
DISCLOSURE TIMELINE	2023-07-26 - Vulnerability reported to vendor 2023-12-19 - Coordinated public release of advisory
CREDIT	Nicholas Zubrisky and Peter Girnus of Trend Micro Zero Day Initiative

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