An integer overflow was discovered in the CoAP library in Arm Mbed OS 5.14.0. The function sn_coap_builder_calc_needed_packet_data_size_2() is used to calculate the required memory for the CoAP message from the sn_coap_hdr_s data structure. Both returned_byte_count and src_coap_msg_ptr->payload_len are of type uint16_t. When added together, the result returned_byte_count can wrap around the maximum uint16_t value. As a result, insufficient buffer space is allocated for the corresponding CoAP message.
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Affected Vendors & Products
References
History
No history.
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-05T01:33:17.231Z
Reserved: 2019-10-06T00:00:00
Link: CVE-2019-17211
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Status : Modified
Published: 2019-11-05T16:15:10.570
Modified: 2024-11-21T04:31:51.997
Link: CVE-2019-17211
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