CVE-2018-0273 Denial of service in Cisco StarOS IPsec Manager
Unauthenticated remote attackers can cause a denial of service by sending crafted IKEv2 messages to Cisco StarOS IPsec Manager, terminating active VPN tunnels.
- 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-2018-0273?
CVE-2018-0273 is a medium-severity denial of service vulnerability in Cisco StarOS IPsec Manager, published on 19 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the IPsec Manager of Cisco StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Routers and Virtualized Packet Core (VPC) System Software could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from being established, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. An attacker could exploit this vulnerability by sending crafted IKEv2 messages toward an affected router. A successful exploit could allow the attacker to cause the ipsecmgr service to reload. A reload of this service could cause all IPsec VPN tunnels to be terminated and prevent new tunnels from being established until the service has restarted, resulting in a DoS condition. This vulnerability affects the following Cisco products when they are running Cisco StarOS: Cisco Aggregation Services Router (ASR) 5000 Series Routers, Virtualized Packet Core (VPC) System Software. Cisco Bug IDs: CSCve29605.
Weakness: CWE-399
Which versions are affected by CVE-2018-0273?
It affects 1 product.
Products include Cisco Staros.
How do I fix CVE-2018-0273?
No fix has been published for CVE-2018-0273 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-2018-0273 being exploited?
There is no known exploitation of CVE-2018-0273 in the wild and no public exploit code.
Other vulnerabilities in Cisco StarOS IPsec Manager
- CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software
- CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability
- CVE-2018-0369 Denial of service in Cisco StarOS unknown
- CVE-2017-6707 Command injection in Cisco StarOS
- CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Sources
Also known as GHSA-vx8f-xw5m-52fj.