Active Debug Code in Cisco Systems, Inc products - CVE-2021-1381
Published: March 29, 2021
Vulnerability identifier: #VU51764
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1381
CWE-ID: CWE-489
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to open a debugging console.
The vulnerability exists due to insufficient command authorization restrictions. An attacker with physical access can use specially crafted commands on the hardware platform and access a debugging console.
Affected software
IR1101 Integrated Services Routers
ESR6300 Embedded Series Routers
Cisco IOS XE
ESR6300 Embedded Series Routers
Cisco IOS XE
How to mitigate CVE-2021-1381
Install updates from vendor's website.
Cisco IOS XE - addressed in versions 16.12.4.39, 16.12.5, 16.12.5a, 17.1.3, 17.3.0.203, 17.3.1, 17.3.1w, 17.3.1x, 17.3.1a, 17.3.1.1, 17.3.2, 17.3.2a, 17.3.3, 17.4.0.62, 17.4.1, 17.4.1a, 17.4.1b