CVE-2021-1321 Command injection in Cisco Small Business RV Series Router Firmware
Authenticated attackers can execute arbitrary code as root or cause a denial of service on Cisco Small Business RV Series Routers via crafted HTTP requests.
- 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-2021-1321?
CVE-2021-1321 is a high-severity command injection vulnerability in Cisco Small Business RV Series Router Firmware, published on 4 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.
Weakness: CWE-121
Which versions are affected by CVE-2021-1321?
It affects 6 products.
Products include Cisco Rv016 Multi-Wan Vpn Router Firmware, Cisco Rv042 Dual Wan Vpn Router Firmware, Cisco Rv042g Dual Gigabit Wan Vpn Router Firmware, Cisco Rv082 Dual Wan Vpn Router Firmware, Cisco Rv320 Dual Gigabit Wan Vpn Router Firmware, Cisco Rv325 Dual Gigabit Wan Vpn Router Firmware.
How do I fix CVE-2021-1321?
No fix has been published for CVE-2021-1321 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-2021-1321 being exploited?
There is no known exploitation of CVE-2021-1321 in the wild and no public exploit code.
Other vulnerabilities in Cisco Small Business RV Series Router Firmware
- CVE-2021-1314 Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1315 Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1316 Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1317 Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities
- CVE-2021-1318 Cisco Small Business RV Series Routers Management Interface Command Injection Vulnerabilities
Sources
Also known as GHSA-hcxg-m989-4j63.