Resource management errors in Cisco ASR 5000 Series - CVE-2018-0273
Published: April 20, 2018
Vulnerability identifier: #VU12065
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-0273
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. A remote attacker can send specially crafted IKEv2 messages, trigger the ipsecmgr service to reload, all IPsec VPN tunnels to be terminated and prevent new tunnels from being established and cause the service to crash.
The weakness exists due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. A remote attacker can send specially crafted IKEv2 messages, trigger the ipsecmgr service to reload, all IPsec VPN tunnels to be terminated and prevent new tunnels from being established and cause the service to crash.
Affected software
Cisco ASR 5000 Series
How to mitigate CVE-2018-0273
Update to versions 21.2.6, 21.4.M0.67792, 21.4.D0.67794, 21.4.C0.68000, 21.4.A0.67168, 21.4.A0.67147, 21.4.0, 21.4.0.68051, 21.3.a0.68015, 21.3.M0.67158, 21.3.M0.67139, 21.3.J0.67155, 21.3.J0.67141 or 21.2.6.67773.