(0Day) D-Link DCS-960L HNAP Cookie Format String Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DCS-960L Wi-Fi cameras. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the Cookie request header. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this vulnerability to execute code in the context of the device.
Additional Details
This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.
07/20/20 - ZDI reported the vulnerability to D-Link
10/16/20 - ZDI requested a status update
12/09/20 - ZDI notified D-Link of the intention to publish the report as 0-day advisory on 12/15/2020
-- Mitigation:
Given the nature of the vulnerability the only salient mitigation strategy is to restrict interaction with the application.
Disclosure Timeline
- 2020-07-20 - Vulnerability reported to vendor
- 2020-12-15 - Coordinated public release of advisory
- 2021-09-27 - Advisory Updated
Credit
phieulang aka Hoang Le of VietSunShine Cyber Security Services
