#VU11358 Data handling in Cisco IOS XE - CVE-2018-0157
Published: March 30, 2018
Vulnerability identifier: #VU11358
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-0157
CWE-ID: CWE-19
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS XE
Cisco IOS XE
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 Zone-Based Firewall code due to improper handling of fragmented packets. A remote attacker can send fragmented IP Version 4 or IP Version 6 packets and cause the service to crash.
The weakness exists in the Zone-Based Firewall code due to improper handling of fragmented packets. A remote attacker can send fragmented IP Version 4 or IP Version 6 packets and cause the service to crash.
Remediation
Update to versions 16.6.2, 16.5.2, 16.5(1.132) or 16.4(2.116).