cisco-sa-ap-ethport-dos-xtjTt8pY: Cisco Aironet Access Points Ethernet Wired Clients Denial of Service Vulnerability
First published: Thu Sep 24 2020(Updated: )
A vulnerability in the Ethernet packet handling of Cisco Aironet 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 insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pY
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Wireless LAN Controllers | =8.8 - 8.9<8.10.105.0 | 8.10.105.0 |
| Cisco Catalyst 9800 Series Wireless Controllers | =16.12 and earlier<16.12.2s | 16.12.2s |
| Cisco Business AP Software |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-ap-ethport-dos-xtjTt8pY?
The severity of cisco-sa-ap-ethport-dos-xtjTt8pY is classified as a denial of service (DoS) vulnerability.
How do I fix cisco-sa-ap-ethport-dos-xtjTt8pY?
To fix cisco-sa-ap-ethport-dos-xtjTt8pY, update to the recommended software versions provided by Cisco.
What products are affected by cisco-sa-ap-ethport-dos-xtjTt8pY?
cisco-sa-ap-ethport-dos-xtjTt8pY affects certain versions of Cisco Wireless LAN Controllers and Catalyst 9800 Wireless Controllers.
Can cisco-sa-ap-ethport-dos-xtjTt8pY be exploited remotely?
cisco-sa-ap-ethport-dos-xtjTt8pY requires an adjacent attacker, meaning it cannot be exploited remotely.
What is the cause of cisco-sa-ap-ethport-dos-xtjTt8pY?
The cause of cisco-sa-ap-ethport-dos-xtjTt8pY is insufficient input validation in the Ethernet packet handling of affected Cisco devices.
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- agent/tags
- collector/cisco-advisory
- source/Cisco
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- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco wireless lan controllers
- version/cisco wireless lan controllers/8.8 - 8.9
- canonical/cisco catalyst 9800 series wireless controllers
- version/cisco catalyst 9800 series wireless controllers/16.12 and earlier
- canonical/cisco business ap software