A vulnerability in the TL1 function of Cisco Network Convergence System (NCS) 4000 Series could allow an authenticated, local attacker to cause a memory leak in the TL1 process. This vulnerability is due to TL1 not freeing memory under some conditions. An attacker could exploit this vulnerability by connecting to the device and issuing TL1 commands after being authenticated. A successful exploit could allow the attacker to cause the TL1 process to consume large amounts of memory. When the memory reaches a threshold, the Resource Monitor (Resmon) process will begin to restart or shutdown the top five consumers of memory, resulting in a denial of service (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .
History

Fri, 15 Nov 2024 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 15 Nov 2024 15:45:00 +0000

Type Values Removed Values Added
Description A vulnerability in the TL1 function of Cisco Network Convergence System (NCS) 4000 Series could allow an authenticated, local attacker to cause a memory leak in the TL1 process. This vulnerability is due to TL1 not freeing memory under some conditions. An attacker could exploit this vulnerability by connecting to the device and issuing TL1 commands after being authenticated. A successful exploit could allow the attacker to cause the TL1 process to consume large amounts of memory. When the memory reaches a threshold, the Resource Monitor (Resmon) process will begin to restart or shutdown the top five consumers of memory, resulting in a denial of service (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .
Title Cisco Network Convergence System 4000 Series TL1 Denial of Service Vulnerability
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2024-11-15T15:32:28.604Z

Updated: 2024-11-15T15:43:44.513Z

Reserved: 2021-11-02T13:28:29.179Z

Link: CVE-2022-20845

cve-icon Vulnrichment

Updated: 2024-11-15T15:43:41.561Z

cve-icon NVD

Status : Received

Published: 2024-11-15T16:15:22.913

Modified: 2024-11-15T16:15:22.913

Link: CVE-2022-20845

cve-icon Redhat

No data.