Improper input validation in Cisco Catalyst 9300
CVE-2020-3429
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.007 (52.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3429?
- CVE-2020-3429 is a medium-severity vulnerability in Cisco Catalyst 9300, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2020-09-24.
- How severe is CVE-2020-3429?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-3429 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.