National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-12213 Detail

Current Description

A vulnerability in the dynamic access control list (ACL) feature of Cisco IOS XE Software running on Cisco Catalyst 4000 Series Switches could allow an unauthenticated, adjacent attacker to cause dynamic ACL assignment to fail and the port to fail open. This could allow the attacker to pass traffic to the default VLAN of the affected port. The vulnerability is due to an uncaught error condition that may occur during the reassignment of the auth-default-ACL dynamic ACL to a switch port after 802.1x authentication fails. A successful exploit of this issue could allow a physically adjacent attacker to bypass 802.1x authentication and cause the affected port to fail open, allowing the attacker to pass traffic to the default VLAN of the affected switch port. Cisco Bug IDs: CSCvc72751.

Source:  MITRE      Last Modified:  09/07/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-12213
Original release date:
09/07/2017
Last revised:
09/21/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
4.3 Medium
Vector:
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N (legend)
Impact Score:
1.4
Exploitability Score:
2.8
CVSS Version 3 Metrics:
Attack Vector (AV):
Adjacent
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
Low
Availability (A):
None
CVSS Severity (version 2.0):
CVSS v2 Base Score:
3.3 LOW
Vector:
(AV:A/AC:L/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
6.5
CVSS Version 2 Metrics:
Access Vector:
Local network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.securityfocus.com/bid/100663 Third Party Advisory; VDB Entry External Source BID 100663
http://www.securitytracker.com/id/1039284 Third Party Advisory; VDB Entry External Source SECTRACK 1039284
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-cat Mitigation; Vendor Advisory External Source CONFIRM https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-cat

Technical Details

Vulnerability Type (View All)

Change History 3 change records found - show changes