CVE-2017-12281 Auth bypass in Cisco Aironet 1800, 2800, and 3800 Series Access Points

What is CVE-2017-12281?

CVE-2017-12281 is a high-severity authentication bypass vulnerability in Cisco Aironet 1800, 2800, and 3800 Series Access Points, published on 2 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the implementation of Protected Extensible Authentication Protocol (PEAP) functionality for standalone configurations of Cisco Aironet 1800, 2800, and 3800 Series Access Points could allow an unauthenticated, adjacent attacker to bypass authentication and connect to an affected device. The vulnerability exists because the affected device uses an incorrect default configuration setting of fail open when running in standalone mode. An attacker could exploit this vulnerability by attempting to connect to an affected device. A successful exploit could allow the attacker to bypass authentication and connect to the affected device. This vulnerability affects Cisco Aironet 1800, 2800, and 3800 Series Access Points that are running a vulnerable software release and use WLAN configuration settings that include FlexConnect local switching and central authentication with MAC filtering. Cisco Bug IDs: CSCvd46314.

Weakness: CWE-287

Which versions are affected by CVE-2017-12281?

It affects 3 products.

Products include Cisco Aironet 1800 Firmware, Cisco Aironet 2800 Firmware, Cisco Aironet 3800 Firmware.

How do I fix CVE-2017-12281?

No fix has been published for CVE-2017-12281 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-12281 being exploited?

There is no known exploitation of CVE-2017-12281 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q497-x3rm-48vr.