CVE-2022-20845— Cisco Network Convergence System 4000 Series TL1 Denial of Service Vulnerability
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I. Basic Information for CVE-2022-20845
Vulnerability Information
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Vulnerability Title
Cisco Network Convergence System 4000 Series TL1 Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability 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 .
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的内存分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Network Convergence System 4000 Series 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Network Convergence System 4000 Series是美国思科（Cisco）公司的一系列融合的光服务平台。可以支持 DWDM、光传输网络、MPLS 传输配置文件 (TP) 等。 Cisco Network Convergence System 4000 Series 存在安全漏洞。攻击者利用该漏洞在TL1进程中造成内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software | 6.5.29 | - |
II. Public POCs for CVE-2022-20845
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|---|
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Same Patch Batch · Cisco · 2024-11-15 · 50 CVEs total
| CVE-2023-20036 | 9.9 CRITICAL | Cisco Industrial Network Director Command Injection Vulnerability |
| CVE-2023-20154 | 9.1 CRITICAL | Cisco Modeling Labs External Authentication Bypass Vulnerability |
| CVE-2022-20655 | 8.8 HIGH | Cisco 多款产品操作系统命令注入漏洞 |
| CVE-2023-20125 | 8.6 HIGH | Cisco BroadWorks Network Server TCP Denial of Service Vulnerability |
| CVE-2022-20649 | 8.1 HIGH | Cisco Redundancy Configuration Manager Debug Remote Code Execution Vulnerability |
| CVE-2022-20685 | 7.5 HIGH | Multiple Cisco Products Snort Modbus Denial of Service Vulnerability |
| CVE-2022-20853 | 7.4 HIGH | Cisco Expressway Series and Cisco TelePresence VCS Cross-Site Request Forgery Vulnerabilit |
| CVE-2022-20814 | 7.4 HIGH | Cisco Expressway Series and Cisco TelePresence VCS Improper Certificate Validation Vulnera |
| CVE-2022-20793 | 6.8 MEDIUM | Cisco Touch 10 Device Insufficient Identity Verification Vulnerability |
| CVE-2023-20090 | 6.7 MEDIUM | Cisco TelePresence Collaboration Endpoint and RoomOS Software Privilege Escalation Vulnera |
| CVE-2021-34752 | 6.7 MEDIUM | Cisco Firepower Threat Defense Command Injection Vulnerabilities |
| CVE-2022-20652 | 6.5 MEDIUM | Cisco Tetration Command Injection Vulnerability |
| CVE-2021-1484 | 6.5 MEDIUM | Cisco SD-WAN vManage Command Injection Vulnerability |
| CVE-2022-20931 | 6.5 MEDIUM | Cisco Touch 10 Device Downgrade Attack Vulnerability |
| CVE-2022-20656 | 6.5 MEDIUM | Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Path Traversal V |
| CVE-2021-1482 | 6.4 MEDIUM | Cisco SD-WAN vManage Authorization Bypass Vulnerability |
| CVE-2021-1483 | 6.4 MEDIUM | Cisco SD-WAN vManage Software XML External Entity Vulnerability |
| CVE-2022-20871 | 6.3 MEDIUM | Cisco Secure Web Appliance Privilege Escalation Vulnerability |
| CVE-2022-20849 | 6.1 MEDIUM | Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability |
| CVE-2022-20663 | 6.1 MEDIUM | Secure Network Analytics Cross-Site Scripting Vulnerability |
Showing top 20 of 50 CVEs. View all on vendor page → →
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V. Comments for CVE-2022-20845
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