Uncontrolled Memory Allocation in Cisco Network Convergence System 4000 and Cisco IOS XR - CVE-2022-20845
Published: September 15, 2022
Vulnerability identifier: #VU67388
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-20845
CWE-ID: CWE-789
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Network Convergence System 4000
Cisco IOS XR
Cisco Network Convergence System 4000
Cisco IOS XR
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to TL1 function does not free memory under some conditions. A local administrator can cause the TL1 process to consume large amounts of memory and perform a denial of service (DoS) attack.
How to mitigate CVE-2022-20845
Install updates from vendor's website.