#VU12082 Resource exhaustion in Cisco ASA 5500-X Series - CVE-2018-0230
Published: April 23, 2018
Vulnerability identifier: #VU12082
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2018-0230
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco ASA 5500-X Series
Cisco ASA 5500-X Series
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the internal packet-processing functionality due to improper validation of IP Version 4 (IPv4) and IP Version 6 (IPv6) packets after the software reassembles the packets. A remote attacker can send a series of malicious, fragmented IPv4 or IPv6 packets, trigger Snort processes to hang at 100% CPU utilization, which can cause the device to stop processing traffic, and cause the service to crash.
The weakness exists in the internal packet-processing functionality due to improper validation of IP Version 4 (IPv4) and IP Version 6 (IPv6) packets after the software reassembles the packets. A remote attacker can send a series of malicious, fragmented IPv4 or IPv6 packets, trigger Snort processes to hang at 100% CPU utilization, which can cause the device to stop processing traffic, and cause the service to crash.
Remediation
Update to versions 201.1(15.2), 201.1(15.1), 201.1(1.110), 201.1(1.96), 101.2(1.53), 99.1(20.134), 99.1(20.127), 99.1(0.2), 98.2(10.4), 98.2(0.9), 9.9(1.77), 9.9(0.152) or 9.8(2.10).