CVE-2020-12886
First published: Thu Jun 18 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Arm Mbed | =5.15.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-12886?
CVE-2020-12886 has been rated as a medium severity vulnerability.
How do I fix CVE-2020-12886?
To fix CVE-2020-12886, upgrade to the latest version of Arm Mbed OS that addresses the buffer over-read issue.
What systems are affected by CVE-2020-12886?
CVE-2020-12886 specifically affects Arm Mbed OS version 5.15.3.
What type of vulnerability is CVE-2020-12886?
CVE-2020-12886 is classified as a buffer over-read vulnerability.
What components are involved in CVE-2020-12886?
CVE-2020-12886 involves the CoAP library and its parser used in Arm Mbed OS.
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