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.
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References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2020-06-18T18:24:51
Updated: 2024-08-04T12:11:18.975Z
Reserved: 2020-05-15T00:00:00
Link: CVE-2020-12886
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2020-06-18T19:15:11.567
Modified: 2020-06-25T14:31:37.100
Link: CVE-2020-12886
Redhat
No data.