CVE-2022-20761 Cisco 1000 Series Connected Grid Router Integrated Wireless Access Point Denial of Service Vulnerability
An unauthenticated adjacent attacker can cause a denial of service on Cisco CGR1K devices by sending crafted traffic to the integrated wireless access point.
- 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-2022-20761?
CVE-2022-20761 is a high-severity denial of service vulnerability in Cisco Ios, published on 15 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the integrated wireless access point (AP) packet processing of the Cisco 1000 Series Connected Grid Router (CGR1K) could allow an unauthenticated, adjacent attacker to cause a denial of service condition on an affected device. This vulnerability is due to insufficient input validation of received traffic. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the integrated AP to stop processing traffic, resulting in a DoS condition. It may be necessary to manually reload the CGR1K to restore AP operation.
Which versions are affected by CVE-2022-20761?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2022-20761?
No fix has been published for CVE-2022-20761 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-20761 being exploited?
There is no known exploitation of CVE-2022-20761 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios
- CVE-2017-12240 Cisco IOS and IOS XE Software DHCP Remote Code Execution
- CVE-2017-3881 Cisco IOS and IOS XE Remote Code Execution
- CVE-2018-0167 Cisco IOS, XR, and XE Software Buffer Overflow
- CVE-2017-6736 Cisco IOS and IOS XE Software SNMP Remote Code Execution
- CVE-2017-6737 Cisco IOS and IOS XE Software SNMP Remote Code Execution
Sources
Also known as GHSA-7xcx-pr3v-pq9c.