Vulnerability Name: | CVE-2018-0277 (CCN-143395) | ||||||||||||
Assigned: | 2017-11-27 | ||||||||||||
Published: | 2018-05-16 | ||||||||||||
Updated: | 2019-10-09 | ||||||||||||
Summary: | A vulnerability in the Extensible Authentication Protocol-Transport Layer Security (EAP-TLS) certificate validation during EAP authentication for the Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause the ISE application server to restart unexpectedly, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to incomplete input validation of the client EAP-TLS certificate. An attacker could exploit this vulnerability by initiating EAP authentication over TLS to the ISE with a crafted EAP-TLS certificate. A successful exploit could allow the attacker to restart the ISE application server, resulting in a DoS condition on the affected system. The ISE application could continue to restart while the client attempts to establish the EAP authentication connection. If an attacker attempted to import the same EAP-TLS certificate to the ISE trust store, it could trigger a DoS condition on the affected system. This exploit vector would require the attacker to have valid administrator credentials. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance. Cisco Bug IDs: CSCve31857. | ||||||||||||
CVSS v3 Severity: | 8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H) 7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
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CVSS v2 Severity: | 5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
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Vulnerability Type: | CWE-295 | ||||||||||||
Vulnerability Consequences: | Denial of Service | ||||||||||||
References: | Source: MITRE Type: CNA CVE-2018-0277 Source: BID Type: Third Party Advisory, VDB Entry 104212 Source: CCN Type: BID-104212 Cisco Identity Services Engine CVE-2018-0277 Denial of Service Vulnerability Source: SECTRACK Type: Third Party Advisory, VDB Entry 1040922 Source: XF Type: UNKNOWN cisco-iseeap-cve20180277-dos(143395) Source: CCN Type: Cisco Security Advisory cisco-sa-20180516-iseeap Cisco Identity Services Engine EAP TLS Certificate Denial of Service Vulnerability Source: CONFIRM Type: Vendor Advisory https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-iseeap | ||||||||||||
Vulnerable Configuration: | Configuration 1: Configuration CCN 1: Denotes that component is vulnerable | ||||||||||||
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