Advisory Details

November 14th, 2023

TP-Link Archer A54 libcmm.so dm_fillObjByStr Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2023-44448
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	Archer A54
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

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