Resource management error in Cisco NX-OS - CVE-2022-20623
Published: February 24, 2022
Vulnerability identifier: #VU60841
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-20623
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a logic error in the Bidirectional Forwarding Detection (BFD) rate limiter functionality. A remote attacker can send a crafted IPv4 or IPv6 stream of traffic through the device and perform a denial of service attack.
Affected software
Cisco NX-OS
How to mitigate CVE-2022-20623
Install update from vendor's website.
Cisco NX-OS - addressed in versions 7.0(3)I7(10), 9.3(8)