CVE Vulnerability

CVE-2020-12885

An infinite loop 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_multiple_options() parses CoAP options in a while loop. This loop's exit condition is computed using the previously allocated heap memory required for storing the result of parsing multiple options. If the input heap memory calculation results in zero bytes, the loop exit condition is never met and the loop is not terminated. As a result, the packet parsing function never exits, leading to resource consumption.

7.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/ARMmbed/mbed-os/issues/12929 Third Party Advisory
https://github.com/ARMmbed/mbed-coap/pull/116 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:arm:mbed_os:5.15.3:*:*:*:*:*:*:*
Information

Published : 2020-06-18 07:15

Updated : 2020-06-25 02:35

NVD link : CVE-2020-12885

Mitre link : CVE-2020-12885

Products Affected
No products.
CWE
CWE-835