CVE-2023-20020 Denial of service in Cisco BroadWorks
Unauthenticated remote attackers can cause denial of service on Cisco BroadWorks platforms by sending crafted HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20020?
CVE-2023-20020 is a high-severity denial of service vulnerability in Cisco BroadWorks, published on 19 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Device Management Servlet application of Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended Services Platform could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when parsing HTTP requests. An attacker could exploit this vulnerability by sending a sustained stream of crafted requests to an affected device. A successful exploit could allow the attacker to cause all subsequent requests to be dropped, resulting in a DoS condition.
Which versions are affected by CVE-2023-20020?
It affects 2 products.
Products include Cisco Broadworks Application Delivery Platform Device Management, Cisco Broadworks Xtended Services Platform.
How do I fix CVE-2023-20020?
No fix has been published for CVE-2023-20020 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-2023-20020 being exploited?
There is no known exploitation of CVE-2023-20020 in the wild and no public exploit code.
Sources
Also known as GHSA-5qj3-2mwp-vp67.