Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
A vulnerability in the 802.11r Fast Transition feature set of Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a corruption of certain timer mechanisms triggered by specific roaming events. This corruption will eventually cause a timer crash. An attacker could exploit this vulnerability by sending malicious reassociation events multiple times to the same AP in a short period of time, causing a DoS condition on the affected AP. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2018-0441US | high7.4 | — | ||
A vulnerability in the 802.11r Fast Transition feature set of Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service… | ||||
references
External citations — patches, advisories, analysis.
- Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerabilityself
- cisco-sa-20181017-wlc-capwap-dosexternal
- cisco-sa-20181017-wlc-capwap-memory-leakexternal
- cisco-sa-20181017-wlc-gui-privescexternal
- Cisco Security Vulnerability Policyexternal
- Cisco Event Response: October 2018 Cisco Wireless LAN Controller Security Advisory Collectionexternal
- https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlexternal
- https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.htmlexternal
remediations (1)
- FixedCisco Aironet Access Point Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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