CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software
An authenticated attacker can elevate privileges by using a low-privileged SSH key from a trusted IP address, requiring workarounds for mitigation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20046?
CVE-2023-20046 is a high-severity authentication bypass vulnerability in Cisco ASR 5000 Series Software, published on 9 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the key-based SSH authentication feature of Cisco StarOS Software could allow an authenticated, remote attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied credentials. An attacker could exploit this vulnerability by sending a valid low-privileged SSH key to an affected device from a host that has an IP address that is configured as the source for a high-privileged user account. A successful exploit could allow the attacker to log in to the affected device through SSH as a high-privileged user. There are workarounds that address this vulnerability.
Which versions are affected by CVE-2023-20046?
It affects 1 product.
Products include Cisco Staros.
How do I fix CVE-2023-20046?
No fix has been published for CVE-2023-20046 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-20046 being exploited?
There is no known exploitation of CVE-2023-20046 in the wild and no public exploit code.
Other vulnerabilities in Cisco ASR 5000 Series Software
- CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability
- CVE-2018-0369 Denial of service in Cisco StarOS unknown
- CVE-2017-6707 Command injection in Cisco StarOS
- CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
- CVE-2021-1540 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities