CVE-2020-3473 Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability
An authenticated local user can exploit incorrect task group mapping in Cisco IOS XR to gain full administrative control of the device.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3473?
CVE-2020-3473 is a high-severity vulnerability in Cisco Ios Xr, published on 4 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local CLI shell user to elevate privileges and gain full administrative control of the device. The vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker could exploit this vulnerability by first authenticating to the local CLI shell on the device and using the CLI command to bypass the task group–based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on the device without authorization checks.
Which versions are affected by CVE-2020-3473?
It affects 1 product.
Products include Cisco Ios Xr.
How do I fix CVE-2020-3473?
No fix has been published for CVE-2020-3473 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3473 being exploited?
There is no known exploitation of CVE-2020-3473 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xr
- CVE-2020-3118 Cisco IOS XR Software Discovery Protocol Format String
- CVE-2020-3569 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2020-3566 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2010-3035 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service
- CVE-2022-20821 Cisco IOS XR Open Port
Sources
Also known as GHSA-x8v9-c427-8x6q.