CVE-2020-27890 — HIGH (8.2)

Vulnerability Description

The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Write Attributes No Response message. It crashes in zclParseInWriteCmd() and does not update the specific attribute's value.

CVSS Score

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ti	Z-Stack	3.0.1
Ti	Cc2538	-

References

https://github.com/zigbeeprotocol/Z-Fuzzer/tree/master/vulnerabilitiesThird Party Advisory
https://www.ti.com/tool/Z-STACKProductVendor Advisory
https://github.com/zigbeeprotocol/Z-Fuzzer/tree/master/vulnerabilitiesThird Party Advisory
https://www.ti.com/tool/Z-STACKProductVendor Advisory

FAQ

What is CVE-2020-27890?

CVE-2020-27890 is a vulnerability with a CVSS score of 8.2 (HIGH). The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Write Attributes No Response message. It crashes in zclParseInWriteCmd() and d...

How severe is CVE-2020-27890?

CVE-2020-27890 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27890?

Check the references section above for vendor advisories and patch information. Affected products include: Ti Z-Stack, Ti Cc2538.