A buffer over-read was discovered in the CoAP library in Arm Mbed OS 5.15.3. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses the CoAP packet header starting from the message token. The length of the token in the received message is provided in the first byte parsed by the sn_coap_parser_options_parse() function. The length encoded in the message is not validated against the actual input buffer length before accessing the token. As a result, memory access outside of the intended boundary of the buffer may occur.
2020-06-18T19:15:11.567
2024-11-21T05:00:29.590
Modified
CVSSv3.1: 9.1 (CRITICAL)
AV:N/AC:L/Au:N/C:P/I:N/A:P
10.0
4.9