PT-2020-16829 · Texas Instruments · Cc2538+1

Published 2020-10-27 · Updated 2021-07-21 · CVE-2020-27891

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

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

Description The Zigbee protocol implementation does not properly process a ZCL Read Reporting Configuration Response message, causing it to crash in the zclHandleExternal() function.

Recommendations For Texas Instruments CC2538 devices with Z-Stack version 3.0.1, consider disabling the zclHandleExternal() function as a temporary workaround until a patch is available. Restrict access to the ZCL Read Reporting Configuration Response message to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Related Identifiers

CVE-2020-27891

Affected Products

Cc2538

Z-Stack

References · 5

• https://ti.com/tool/Z-STACK · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27891 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27891 · Vendor Advisory
• https://github.com/zigbeeprotocol/Z-Fuzzer/tree/master/vulnerabilities · Note
• https://t.me/cibsecurity/15644 · Telegram Post