CVE-2020-14080 – TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer

TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an unauthenticated user to execute arbitrary code by POSTing to apply_sec.cgi via the action ping_test with a sufficiently long ping_ipaddr key.

Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14080

Reference (s):

• https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-ping_test.pdf
• https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/ping_test_overflow.pdf