ASUS RT-AX92U lighttpd mod_webdav.so SQL Injection Information Disclosure Vulnerability

August 23rd, 2023
ZDI-23-1166 ZDI-CAN-16078

CVE ID

CVE-2023-35720

CVSS Score

6.5 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors

ASUS

Affected Products

RT-AX92U

Vulnerability Details

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected ASUS RT-AX92U routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the mod_webdav.so module. When parsing a request, the process does not properly validate a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to disclose information in the context of root.

Additional Details

ASUS has issued an update to correct this vulnerability. More details can be found at:
https://www.asus.com/networking-iot-servers/whole-home-mesh-wifi-system/aimesh-wifi-routers-and-systems/rt-ax92u/helpdesk_bios/?model2Name=RT-AX92U

Disclosure Timeline

  • 2022-03-23 - Vulnerability reported to vendor
  • 2023-08-23 - Coordinated public release of advisory

Credit

Anonymous

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