CVE-2020-27891 — HIGH (7.5)

Vulnerability Description

The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Read Reporting Configuration Response message. It crashes in zclHandleExternal().

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

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-2020-27891?

CVE-2020-27891 is a vulnerability with a CVSS score of 7.5 (HIGH). The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Read Reporting Configuration Response message. It crashes in zclHandleExternal...

How severe is CVE-2020-27891?

CVE-2020-27891 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27891?

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