CVE-2017-12219 Denial of service in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones
Remote attackers can cause Cisco IP phones to reload unexpectedly by sending crafted IP fragments, 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-2017-12219?
CVE-2017-12219 is a high-severity denial of service vulnerability in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones, published on 21 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the handling of IP fragments for the Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to the inability to handle many large IP fragments for reassembly in a short duration. An attacker could exploit this vulnerability by sending a crafted stream of IP fragments to the targeted device. An exploit could allow the attacker to cause a DoS condition when the device unexpectedly reloads. Cisco Bug IDs: CSCve82586.
Weakness: CWE-399
Which versions are affected by CVE-2017-12219?
It affects 11 products.
Products include Cisco Spa 301 Firmware, Cisco Spa 303 Firmware, Cisco Spa 500ds Firmware, Cisco Spa 500s Firmware, Cisco Spa 501g Firmware, Cisco Spa 502g Firmware and 5 more.
How do I fix CVE-2017-12219?
No fix has been published for CVE-2017-12219 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-2017-12219 being exploited?
There is no known exploitation of CVE-2017-12219 in the wild and no public exploit code.
Other vulnerabilities in Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones
Sources
Also known as GHSA-473r-243h-5q84.