First published: Fri Sep 30 2022(Updated: )
A vulnerability in the DHCP processing functionality of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to the improper processing of DHCP messages. An attacker could exploit this vulnerability by sending malicious DHCP messages to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco IOS XE | =17.3.3 | |
Cisco Catalyst 9800 | ||
Cisco Catalyst 9800-40 | ||
Cisco Catalyst 9800-80 | ||
Cisco Catalyst 9800-cl | ||
Cisco Catalyst 9800-l | ||
Cisco Catalyst 9800-l-c | ||
Cisco Catalyst 9800-l-f |
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The vulnerability ID is CVE-2022-20847.
CVE-2022-20847 has a severity value of 7.5, which is considered high.
Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family versions 17.3.3 is affected by CVE-2022-20847.
An attacker can exploit CVE-2022-20847 by sending specially crafted DHCP messages to the affected system, causing a denial of service (DoS) condition.
Yes, Cisco has released a security advisory that provides information on how to mitigate this vulnerability.