CVE-2020-3429: Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family WPA Denial of Service Vulnerability
First published: Thu Sep 24 2020(Updated: )
A vulnerability in the WPA2 and WPA3 security implementation of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect packet processing during the WPA2 and WPA3 authentication handshake when configured for dot1x or pre-shared key (PSK) authentication key management (AKM) with 802.11r BSS Fast Transition (FT) enabled. An attacker could exploit this vulnerability by sending a crafted authentication packet to an affected device. A successful exploit could cause an affected device to reload, resulting in a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE | =16.12.1s | |
| Cisco Catalyst 9300 | ||
| Cisco Catalyst 9400 | ||
| Cisco Catalyst 9500 | ||
| Cisco Catalyst 9800-40 | ||
| Cisco Catalyst 9800-80 | ||
| Cisco Catalyst 9800-cl | ||
| Cisco Catalyst 9800-l |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3429?
CVE-2020-3429 is a vulnerability in the WPA2 and WPA3 security implementation of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family.
What is the severity of CVE-2020-3429?
CVE-2020-3429 has a severity rating of 6.5 (High).
How does CVE-2020-3429 impact affected devices?
CVE-2020-3429 could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
Which software versions are affected by CVE-2020-3429?
The affected software version is Cisco IOS XE 16.12.1s.
How can I fix CVE-2020-3429?
To fix CVE-2020-3429, it is recommended to upgrade to a fixed software release.
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- canonical/cisco ios xe
- version/cisco ios xe/16.12.1s
- canonical/cisco catalyst 9300
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- canonical/cisco catalyst 9500
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- canonical/cisco catalyst 9800-80
- canonical/cisco catalyst 9800-cl
- canonical/cisco catalyst 9800-l