description: A vulnerability in the boot process of Cisco Access Point (AP) Software could allow an unauthenticated, physical attacker to bypass the Cisco Secure Boot functionality and load a software image that has been tampered with on an affected device.
This vulnerability exists because unnecessary commands are available during boot time at the physical console. An attacker could exploit this vulnerability by interrupting the boot process and executing specific commands to bypass the Cisco Secure Boot validation checks and load an image that has been tampered with. This image would have been previously downloaded onto the targeted device. A successful exploit could allow the attacker to load the image once. The Cisco Secure Boot functionality is not permanently compromised.
problem types: Trust Boundary Violation
affected:
{
vendor: Cisco
product: Cisco IOS XE Software
versions:
version: N/A, status: affected
}
{
vendor: Cisco
product: Cisco Aironet Access Point Software
versions:
version: 8.2.100.0, status: affected
version: 8.2.130.0, status: affected
version: 8.2.111.0, status: affected
version: 8.2.110.0, status: affected
version: 8.2.121.0, status: affected
version: 8.2.141.0, status: affected
version: 8.2.151.0, status: affected
version: 8.2.160.0, status: affected
version: 8.2.161.0, status: affected
version: 8.2.164.0, status: affected
version: 8.2.166.0, status: affected
version: 8.2.170.0, status: affected
version: 8.2.163.0, status: affected
version: 8.3.102.0, status: affected
version: 8.3.111.0, status: affected
version: 8.3.112.0, status: affected
version: 8.3.121.0, status: affected
version: 8.3.122.0, status: affected
version: 8.3.130.0, status: affected
version: 8.3.131.0, status: affected
version: 8.3.132.0, status: affected
version: 8.3.133.0, status: affected
version: 8.3.140.0, status: affected
version: 8.3.141.0, status: affected
version: 8.3.143.0, status: affected
version: 8.3.150.0, status: affected
version: 8.3.108.0, status: affected
version: 8.3.90.53, status: affected
version: 8.3.104.46, status: affected
version: 8.3.200.200, status: affected
version: 8.3.104.64, status: affected
version: 8.3.15.165, status: affected
version: 8.3.90.11, status: affected
version: 8.3.135.0, status: affected
version: 8.3.104.14, status: affected
version: 8.3.90.36, status: affected
version: 8.3.15.142, status: affected
version: 8.3.104.37, status: affected
version: 8.3.15.117, status: affected
version: 8.3.15.120, status: affected
version: 8.3.15.25, status: affected
version: 8.3.15.158, status: affected
version: 8.3.15.118, status: affected
version: 8.3.90.25, status: affected
version: 8.3.15.169, status: affected
version: 8.3.90.58, status: affected
version: 8.4.100.0, status: affected
version: 8.4.1.199, status: affected
version: 8.4.1.91, status: affected
version: 8.4.1.142, status: affected
version: 8.4.1.175, status: affected
version: 8.4.1.218, status: affected
version: 8.4.1.92, status: affected
version: 8.5.103.0, status: affected
version: 8.5.105.0, status: affected
version: 8.5.110.0, status: affected
version: 8.5.120.0, status: affected
version: 8.5.131.0, status: affected
version: 8.5.140.0, status: affected
version: 8.5.135.0, status: affected
version: 8.5.151.0, status: affected
version: 8.5.101.0, status: affected
version: 8.5.102.0, status: affected
version: 8.5.161.0, status: affected
version: 8.5.160.0, status: affected
version: 8.5.100.0, status: affected
version: 8.5.171.0, status: affected
version: 8.5.164.0, status: affected
version: 8.5.182.0, status: affected
version: 8.5.182.11 ME, status: affected
version: 8.7.102.0, status: affected
version: 8.7.106.0, status: affected
version: 8.7.1.16, status: affected
version: 8.8.100.0, status: affected
version: 8.8.111.0, status: affected
version: 8.8.120.0, status: affected
version: 8.8.125.0, status: affected
version: 8.8.130.0, status: affected
version: 8.6.101.0, status: affected
version: 8.6.1.84, status: affected
version: 8.6.1.70, status: affected
version: 8.6.1.71, status: affected
version: 8.9.100.0, status: affected
version: 8.9.111.0, status: affected
version: 8.10.105.0, status: affected
version: 8.10.111.0, status: affected
version: 8.10.130.0, status: affected
version: 8.10.112.0, status: affected
version: 8.10.122.0, status: affected
version: 8.10.113.0, status: affected
version: 8.10.121.0, status: affected
version: 8.10.141.0, status: affected
version: 8.10.142.0, status: affected
version: 8.10.151.0, status: affected
version: 8.10.150.0, status: affected
version: 8.10.171.0, status: affected
version: 8.10.181.0, status: affected
version: 8.10.182.0, status: affected
version: 8.10.161.0, status: affected
version: 8.10.170.0, status: affected
version: 8.10.183.0, status: affected
version: 8.10.162.0, status: affected
version: 8.10.185.0, status: affected
}
{
vendor: Cisco
product: Cisco Business Wireless Access Point Software
versions:
version: 10.0.1.0, status: affected
version: 10.0.2.0, status: affected
version: 10.1.1.0, status: affected
version: 10.1.2.0, status: affected
version: 10.2.1.0, status: affected
version: 10.2.2.0, status: affected
version: 10.3.1.0, status: affected
version: 10.3.1.1, status: affected
version: 10.3.2.0, status: affected
version: 10.4.1.0, status: affected
version: 10.4.2.0, status: affected
version: 10.6.1.0, status: affected
version: 10.6.2.0, status: affected
version: 10.7.1.0, status: affected
version: 10.8.1.0, status: affected
version: 10.5.2.0, status: affected
}
{
vendor: Cisco
product: Cisco Aironet Access Point Software (IOS XE Controller)
versions:
version: 16.10.1e, status: affected
version: 16.10.1, status: affected
version: 17.1.1t, status: affected
version: 17.1.1s, status: affected
version: 17.1.1, status: affected
version: 16.11.1a, status: affected
version: 16.11.1, status: affected
version: 16.11.1c, status: affected
version: 16.11.1b, status: affected
version: 16.12.1s, status: affected
version: 16.12.4, status: affected
version: 16.12.1, status: affected
version: 16.12.2s, status: affected
version: 16.12.1t, status: affected
version: 16.12.4a, status: affected
version: 16.12.5, status: affected
version: 16.12.3, status: affected
version: 16.12.6, status: affected
version: 16.12.8, status: affected
version: 16.12.7, status: affected
version: 16.12.6a, status: affected
version: 17.3.1, status: affected
version: 17.3.2a, status: affected
version: 17.3.3, status: affected
version: 17.3.4, status: affected
version: 17.3.5, status: affected
version: 17.3.2, status: affected
version: 17.3.4c, status: affected
version: 17.3.5a, status: affected
version: 17.3.5b, status: affected
version: 17.3.6, status: affected
version: 17.2.1, status: affected
version: 17.2.1a, status: affected
version: 17.2.3, status: affected
version: 17.2.2, status: affected
version: 17.5.1, status: affected
version: 17.4.1, status: affected
version: 17.4.2, status: affected
version: 17.6.1, status: affected
version: 17.6.2, status: affected
version: 17.6.3, status: affected
version: 17.6.4, status: affected
version: 17.6.5, status: affected
version: 17.6.6a, status: affected
version: 17.6.5a, status: affected
version: 17.10.1, status: affected
version: 17.9.1, status: affected
version: 17.9.2, status: affected
version: 17.9.3, status: affected
version: 17.7.1, status: affected
version: 17.8.1, status: affected
version: 17.11.1, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
baseScore: 5.9
baseSeverity: MEDIUM
attackVector: PHYSICAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: NONE
]
exploits: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.