Resource management error in Cisco IOS XE - CVE-2021-1624
Published: September 24, 2021
Vulnerability identifier: #VU56866
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-2021-1624
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 improper management of internal resources within the application in the Rate Limiting Network Address Translation (NAT) feature. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
Cisco IOS XE
How to mitigate CVE-2021-1624
Install update from vendor's website.
Cisco IOS XE - addressed in versions 16.6.10, 16.9.8, 16.12.6, 17.3.4a, 17.4.2, 17.6.1a