CVE-2020-12887

https://notcve.org/view.php?id=CVE-2020-12887

Memory leaks were discovered in the CoAP library in Arm Mbed OS 5.15.3 when using the Arm mbed-coap library 5.1.5. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses the CoAP option number field of all options present in the input packet. Each option number is calculated as a sum of the previous option number and a delta of the current option. The delta and the previous option number are expressed as unsigned 16-bit integers. • https://github.com/ARMmbed/mbed-coap/pull/116 https://github.com/ARMmbed/mbed-os/issues/12930 https://github.com/ARMmbed/mbed-os/issues/12957 https://github.com/mjurczak/mbed-coap/commit/4647a68e364401e81dbd370728127d844f221d93 • CWE-190: Integer Overflow or Wraparound CWE-401: Missing Release of Memory after Effective Lifetime •