CVE-2018-0378 Denial of service in Cisco NX-OS Software for Nexus 6000 Series
Remote attackers can cause denial of service on Cisco Nexus switches by flooding Precision Time Protocol traffic, requiring PTP to be enabled.
- 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-2018-0378?
CVE-2018-0378 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 17 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Precision Time Protocol (PTP) feature of Cisco Nexus 5500, 5600, and 6000 Series Switches running Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of protection against PTP frame flood attacks. An attacker could exploit this vulnerability by sending large streams of malicious IPv4 or IPv6 PTP traffic to the affected device. A successful exploit could allow the attacker to cause a DoS condition, impacting the traffic passing through the device.
Weakness: CWE-20
Which versions are affected by CVE-2018-0378?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2018-0378?
No fix has been published for CVE-2018-0378 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-2018-0378 being exploited?
There is no known exploitation of CVE-2018-0378 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-cqfr-gw47-8rvr.