CVE-2021-40120 Cisco Small Business RV Series Routers Command Injection Vulnerability
Authenticated administrators can inject arbitrary commands to execute code with root privileges on Cisco Small Business RV Series Routers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40120?
CVE-2021-40120 is a medium-severity command injection vulnerability in Cisco Application Extension Platform, published on 4 Nov 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges.
Which versions are affected by CVE-2021-40120?
It affects 2 products.
Products include Cisco Application Extension Platform, Cisco Ios Xr.
How do I fix CVE-2021-40120?
No fix has been published for CVE-2021-40120 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-40120 being exploited?
There is no known exploitation of CVE-2021-40120 in the wild and no public exploit code.
Other vulnerabilities in Cisco Application Extension Platform
- CVE-2021-34730 Memory corruption in Cisco Small Business RV Series Router Firmware
- CVE-2021-1146 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1147 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1148 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1149 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities
Sources
Also known as GHSA-f2p2-qfcm-69wm.