Improper Authorization in Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches NX-OS Mode - CVE-2020-3394

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Main Vulnerability Database Vulnerabilities #VU46099

Improper Authorization in Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches NX-OS Mode - CVE-2020-3394

Published: August 27, 2020


Vulnerability identifier: #VU46099
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3394
CWE-ID: CWE-285
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to bypass authorization checks.

The vulnerability exists due to a logic error in the implementation of the "enable" command in the Enable Secret feature. A local user can issue the "enable" command and get full administrative privileges on the target system.


Affected software

Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches NX-OS Mode

How to mitigate CVE-2020-3394

Install updates from vendor's website.

Cisco Nexus 3000 Series Switches - update to 9.3.4
Cisco Nexus 9000 Series Switches NX-OS Mode - addressed in versions 9.3.3.113, 9.3.4

External References

Related Security Bulletins