CVE-2018-0369 Denial of service in Cisco StarOS unknown
Remote attackers can cause a denial of service by sending malicious fragmented IPv4 packets to Cisco StarOS virtual platforms, triggering process restarts.
- 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-2018-0369?
CVE-2018-0369 is a high-severity denial of service vulnerability in Cisco StarOS unknown, published on 16 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the reassembly logic for fragmented IPv4 packets of Cisco StarOS running on virtual platforms could allow an unauthenticated, remote attacker to trigger a reload of the npusim process, resulting in a denial of service (DoS) condition. There are four instances of the npusim process running per Service Function (SF) instance, each handling a subset of all traffic flowing across the device. It is possible to trigger a reload of all four instances of the npusim process around the same time. The vulnerability is due to improper handling of fragmented IPv4 packets containing options. An attacker could exploit this vulnerability by sending a malicious IPv4 packet across an affected device. An exploit could allow the attacker to trigger a restart of the npusim process, which will result in all traffic queued toward this instance of the npusim process to be dropped while the process is restarting. The npusim process typically restarts within less than a second. This vulnerability affects: Cisco Virtualized Packet Core-Single Instance (VPC-SI), Cisco Virtualized Packet Core-Distributed Instance (VPC-DI), Cisco Ultra Packet Core (UPC). Cisco Bug IDs: CSCvh29613.
Weakness: CWE-20
Which versions are affected by CVE-2018-0369?
It affects 1 product.
Products include Cisco Staros.
How do I fix CVE-2018-0369?
No fix has been published for CVE-2018-0369 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-2018-0369 being exploited?
There is no known exploitation of CVE-2018-0369 in the wild and no public exploit code.
Other vulnerabilities in Cisco StarOS unknown
- CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software
- CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability
- CVE-2017-6707 Command injection in Cisco StarOS
- CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
- CVE-2021-1540 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Sources
Also known as GHSA-cmmh-whh8-pwmv.