Resource management error in Cisco Systems, Inc products - CVE-2022-20847
Published: September 28, 2022
Vulnerability identifier: #VU67722
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-20847
CWE-ID: CWE-399
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Cisco Catalyst 9800 Wireless Controller
Cisco 9800 Series Wireless Controllers
Cisco IOS XE
Cisco Catalyst 9800 Wireless Controller
Cisco 9800 Series Wireless Controllers
Cisco IOS XE
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when handling DHCP messages with enabled DHCP TLV caching feature. A remote attacker can send specially crafted DHCP messages to the device and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.