Exposure of Resource to Wrong Sphere in Cisco Systems, Inc products - CVE-2021-34723
Published: September 24, 2021
Vulnerability identifier: #VU56861
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-34723
CWE-ID:
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE SD-WAN
Cisco 1000 Series Integrated Services Routers
Cisco 4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Cisco Cloud Services Router 1000V Series
Cisco IOS XE SD-WAN
Cisco 1000 Series Integrated Services Routers
Cisco 4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Cisco Cloud Services Router 1000V Series
Detailed vulnerability description
The vulnerability allows a local user to overwrite arbitrary files on the system.
The vulnerability exists due to insufficient validation of specific CLI command parameters. A local administrator can overwrite the content of the configuration database and gain root-level access to an affected device.
How to mitigate CVE-2021-34723
Install updates from vendor's website.