CVE-2017-12213

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.33%
Vendor Advisory cisco.com
Affected: n/a Cisco Catalyst 4000 Series Switches
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-cat mitigation vendor advisory
http://www.securitytracker.com/id/1039284 vdb entry third party advisory
http://www.securityfocus.com/bid/100663 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-12213?
CVE-2017-12213 has been scored as a medium severity vulnerability.
How to fix CVE-2017-12213?
To fix CVE-2017-12213, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12213 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12213 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-12213?
CVE-2017-12213 affects n/a Cisco Catalyst 4000 Series Switches.
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