CVE-2024-20451 Denial of service in Cisco Small Business IP Phones
Unauthenticated remote attackers can cause Cisco Small Business IP Phones to reload unexpectedly by sending crafted HTTP packets, resulting in a denial of service.
- 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-2024-20451?
CVE-2024-20451 is a high-severity denial of service vulnerability in Cisco Small Business IP Phones, published on 7 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.
Weakness: CWE-120
Which versions are affected by CVE-2024-20451?
It affects 11 products.
Products include Cisco Spa 301 Firmware, Cisco Spa 303 Firmware, Cisco Spa 501g Firmware, Cisco Spa 502g Firmware, Cisco Spa 504g Firmware, Cisco Spa 508g Firmware and 5 more.
How do I fix CVE-2024-20451?
No fix has been published for CVE-2024-20451 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-2024-20451 being exploited?
There is no known exploitation of CVE-2024-20451 in the wild and no public exploit code.
Other vulnerabilities in Cisco Small Business IP Phones
Sources
Also known as GHSA-3gj8-mpqg-gqrv.