CVE-2017-3882 Memory corruption in Cisco CVR100W Wireless-N VPN Router
Unauthenticated attackers can execute arbitrary code with root privileges or cause denial of service via buffer overflow in UPnP implementation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-3882?
CVE-2017-3882 is a critical memory corruption vulnerability in Cisco CVR100W Wireless-N VPN Router, published on 16 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Universal Plug-and-Play (UPnP) implementation in the Cisco CVR100W Wireless-N VPN Router could allow an unauthenticated, Layer 2-adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition. The remote code execution could occur with root privileges. The vulnerability is due to incomplete range checks of the UPnP input data, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a malicious request to the UPnP listening port of the targeted device. An exploit could allow the attacker to cause the device to reload or potentially execute arbitrary code with root privileges. This vulnerability affects all firmware releases of the Cisco CVR100W Wireless-N VPN Router prior to Firmware Release 1.0.1.22. Cisco Bug IDs: CSCuz72642.
Weakness: CWE-119
Which versions are affected by CVE-2017-3882?
It affects 2 products.
Products include Cisco Small Business Rv Router Firmware, Cisco Small Business Rv Router Firmware 1.0.
How do I fix CVE-2017-3882?
No fix has been published for CVE-2017-3882 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-3882 being exploited?
There is no known exploitation of CVE-2017-3882 in the wild and no public exploit code.
Sources
Also known as GHSA-vxgv-678v-vchx.