Resource exhaustion in Cisco Aironet Access Points
CVE-2018-0381
A vulnerability in the Cisco Aironet Series Access Points (APs) software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a deadlock condition that may occur when an affected AP attempts to dequeue aggregated traffic that is destined to an attacker-controlled wireless client. An attacker who can successfully transition between multiple Service Set Identifiers (SSIDs) hosted on the same AP while replicating the required traffic patterns could trigger the deadlock condition. A watchdog timer that detects the condition will trigger a reload of the device, resulting in a DoS condition while the device restarts.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Cisco Aironet Access Points — versions 8.7(1.96), 8.7(1.99), 8.2\(166.0\)
- Cisco Aironet Access Points — versions 8.3, 8.2, 8.5
Weakness classification (CWE)
References
- www.securitytracker.com/id/1041929 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/105685 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-0381?
- CVE-2018-0381 is a medium-severity vulnerability in Cisco Aironet Access Points, classified under Uncontrolled Resource Consumption. CVSS score: 6.8/10. Published 2018-10-17.
- How severe is CVE-2018-0381?
- Medium severity. CVSS v3 base score is 6.8 out of 10.