CVE-2020-27890

Name of the Vulnerable Software and Affected Versions Texas Instruments CC2538 devices with Z-Stack version 3.0.1

Description The issue arises from the improper processing of a ZCL Write Attributes No Response message in the Zigbee protocol implementation. This results in a crash in the zclParseInWriteCmd() function and fails to update the specific attribute's value.

Recommendations For Texas Instruments CC2538 devices with Z-Stack version 3.0.1, consider updating to a newer version of Z-Stack that properly handles ZCL Write Attributes No Response messages to prevent crashes and ensure attribute values are updated correctly. As a temporary workaround, consider restricting the use of ZCL Write Attributes No Response messages until a patch is available.