Resource exhaustion in Cisco ASA 5500-X Series - CVE-2018-0228

Vulnerability identifier: #VU12091

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-2018-0228

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system. 

The weakness exists in the ingress flow creation functionality due to incorrect handling of an internal software lock that can prevent other system processes from getting CPU cycles, causing a high CPU condition. A remote attacker can send a steady stream of malicious IP packets that can cause connections to be created, exhaust CPU resources and cause the service to crash.

Cisco ASA 5500-X Series
Allen-Bradley Stratix 5950 1783-SAD4T0SBK9
Allen-Bradley Stratix 5950 1783-SAD4T0SPK9
Allen-Bradley Stratix 5950 1783-SAD2T2SBK9
Allen-Bradley Stratix 5950 1783-SAD2T2SPK9

Update to versions 201.1(15.1), 201.1(14.4), 201.1(1.82), 101.2(1.20), 100.13(0.171), 100.11(0.87), 100.8(40.140), 99.1(20.127), 98.2(10.4), 98.2(0.5), 97.1(0.167), 96.2(0.151), 9.9(0.152), 9.8(2.12), 9.7(1.16), 9.6(4), 9.6(3.236), 9.6(3.16), 9.4(4.13), 9.2(4.26), 9.1(7.232) or 9.1(7.20).

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa2

• Multiple vulnerabilities in Cisco ASA 5500-X Series
• Multiple vulnerabilities in Rockwell Automation Allen-Bradley Stratix 5950