Credentials management in Cisco Systems, Inc products - CVE-2023-20046
Published: April 20, 2023
Vulnerability identifier: #VU75372
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-20046
CWE-ID: CWE-255
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied credentials in the key-based SSH authentication feature. A remote user can send a valid low-privileged SSH key and log in to the affected device through SSH as a high-privileged user.
Affected software
Cisco StarOS
Cisco ASR 5000 Series
Virtualized Packet Core - Distributed Instance (VPC-DI)
Virtualized Packet Core - Single Instance (VPC-SI)
Cisco ASR 5000 Series
Virtualized Packet Core - Distributed Instance (VPC-DI)
Virtualized Packet Core - Single Instance (VPC-SI)
How to mitigate CVE-2023-20046
Install updates from vendor's website.
Cisco StarOS - addressed in versions 21.22.n14, 21.22.14, 21.23.n12, 21.23.31, 21.25.15, 21.26.17, 21.27.m1, 21.27.6, 21.28.m4, 21.28.3