Improper authentication in Cisco IOS XE - CVE-2018-0163
Published: March 30, 2018
Vulnerability identifier: #VU11359
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-0163
CWE-ID: CWE-287
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an adjacent unauthenticated attacker to bypass authentication on the target system.
The weakness exists in the 802.1x multiple-authentication (multi-auth) feature due to logic change error introduced into the code. An adjacent attacker can try to access an 802.1x multi-auth port after a successful supplicant has authenticated and bypass the 802.1x access controls.
The weakness exists in the 802.1x multiple-authentication (multi-auth) feature due to logic change error introduced into the code. An adjacent attacker can try to access an 802.1x multi-auth port after a successful supplicant has authenticated and bypass the 802.1x access controls.
Affected software
Cisco IOS XE
How to mitigate CVE-2018-0163
Update to versions 15.7(3.1.14A)OT, 15.7(3.1.10U)OT, 15.7(3.0z)M, 15.7(2.0v)M0.6, 15.6(3)M4, 15.6(3)M3.1 or 15.5(3)M7.