Files or Directories Accessible to External Parties in Cisco IOS XE - CVE-2020-3476
Published: September 24, 2020 / Updated: September 30, 2020
Vulnerability identifier: #VU47215
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3476
CWE-ID: CWE-552
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to overwrite arbitrary files in the underlying host file system.
The vulnerability exists due to insufficient validation of the parameters of a specific CLI command. A local administrator can issue that command with specific parameters and overwrite the content of any arbitrary file that resides on the underlying host file system.
Affected software
Cisco IOS XE
How to mitigate CVE-2020-3476
Install updates from vendor's website.
Cisco IOS XE - addressed in versions Gibraltar 16.11.1, Gibraltar 16.11.1a, Gibraltar 16.11.1b, Gibraltar 16.11.1c, Gibraltar 16.11.1s, 16.9.2.29, 16.9.3, 16.9.3h, 16.9.3s, 16.9.3a, 16.9.4, 16.9.4c, 16.9.5, 16.9.5f, 16.9.6, 16.10.1.35, 16.10.2, 16.10.3, 16.11.0.85, 16.11.1, 16.11.1c, 16.11.1s, 16.11.1a, 16.11.1b