A vulnerability in the 802.1x multiple-authentication (multi-auth) feature of Cisco IOS Software could allow an unauthenticated, adjacent attacker to bypass the authentication phase on an 802.1x multi-auth port. The vulnerability is due to a logic change error introduced into the code. An attacker could exploit this vulnerability by trying to access an 802.1x multi-auth port after a successful supplicant has authenticated. An exploit could allow the attacker to bypass the 802.1x access controls and obtain access to the network. Cisco Bug IDs: CSCvg69701.
Published 2018-03-28 22:29:01
Updated 2021-04-28 22:38:37
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Products affected by CVE-2018-0163

Exploit prediction scoring system (EPSS) score for CVE-2018-0163

0.25%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0163

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.3
LOW AV:A/AC:L/Au:N/C:N/I:P/A:N
6.5
2.9
NIST
6.5
MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
2.8
3.6
NIST

CWE ids for CVE-2018-0163

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by:
    • nvd@nist.gov (Primary)
    • ykramarz@cisco.com (Secondary)

References for CVE-2018-0163

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