CVE-2017-12328 Denial of service in Cisco IP Phone 8800 Series
Remote attackers can cause denial of service on Cisco IP Phones by sending malformed SIP packets, dropping all active calls.
- 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-2017-12328?
CVE-2017-12328 is a medium-severity denial of service vulnerability in Cisco IP Phone 8800 Series, published on 30 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the SIP process unexpectedly restarts. All active phone calls are dropped as the SIP process restarts. The vulnerability is due to incomplete input validation of the SIP packet header. An attacker could exploit this vulnerability by sending a malformed SIP packet to a targeted phone. An exploit could allow the attacker to cause a DoS condition because all phone calls are dropped when the SIP process unexpectedly restarts. Cisco Bug IDs: CSCvc62590.
Weakness: CWE-20
Which versions are affected by CVE-2017-12328?
It affects 1 product.
Products include Cisco Ip Phone 8800 Series Firmware.
How do I fix CVE-2017-12328?
No fix has been published for CVE-2017-12328 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-2017-12328 being exploited?
There is no known exploitation of CVE-2017-12328 in the wild and no public exploit code.
Other vulnerabilities in Cisco IP Phone 8800 Series
Sources
Also known as GHSA-9wxx-q8qf-rxcw.