CVE-2018-0117 Denial of service in Cisco Virtualized Packet Core-Distributed Instance
Remote unauthenticated attackers can cause a denial of service by sending malicious traffic to the internal network address, forcing system reloads.
- 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-2018-0117?
CVE-2018-0117 is a high-severity denial of service vulnerability in Cisco Virtualized Packet Core-Distributed Instance, published on 8 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software could allow an unauthenticated, remote attacker to cause both control function (CF) instances on an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient handling of user-supplied data by the affected software. An attacker could exploit this vulnerability by sending malicious traffic to the internal distributed instance (DI) network address on an affected system. A successful exploit could allow the attacker to cause an unhandled error condition on the affected system, which would cause the CF instances to reload and consequently cause the entire VPC to reload, resulting in the disconnection of all subscribers and a DoS condition on the affected system. This vulnerability affects Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software N4.0 through N5.5 with the Cisco StarOS operating system 19.2 through 21.3. Cisco Bug IDs: CSCve17656.
Weakness: CWE-20
Which versions are affected by CVE-2018-0117?
It affects 2 products.
Products include Cisco Asr 5000 Firmware, Cisco Asr 5500 Firmware.
How do I fix CVE-2018-0117?
No fix has been published for CVE-2018-0117 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-2018-0117 being exploited?
There is no known exploitation of CVE-2018-0117 in the wild and no public exploit code.
Other vulnerabilities in Cisco Virtualized Packet Core-Distributed Instance
Sources
Also known as GHSA-q3ch-44pq-833r.