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CVE-2022-20855— Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst Access Points Privilege Escalation Vulnerability

Quick assessment

Affected
Cisco Cisco IOS XE Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE Software存在操作系统命令注入漏洞，该漏洞源于在重新启动某些系统进程过程中进行不正确的检查。攻击者利用该漏洞可以执行任意命令。

CVSS 7.9 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2022-20855

Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst Access Points Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the self-healing functionality of Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst Access Points could allow an authenticated, local attacker to escape the restricted controller shell and execute arbitrary commands on the underlying operating system of the access point. This vulnerability is due to improper checks throughout the restart of certain system processes. An attacker could exploit this vulnerability by logging on to an affected device and executing certain CLI commands. A successful exploit could allow the attacker to execute arbitrary commands on the underlying OS as root. To successfully exploit this vulnerability, an attacker would need valid credentials for a privilege level 15 user of the wireless controller.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Software 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE Software存在操作系统命令注入漏洞，该漏洞源于在重新启动某些系统进程过程中进行不正确的检查。攻击者利用该漏洞可以执行任意命令。
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 XE Software n/a -

II. Public POCs for CVE-2022-20855

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III. Intelligence Information for CVE-2022-20855

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Vendor Advisories for CVE-2022-20855 (1)

Same Patch Batch · Cisco · 2022-09-30 · 16 CVEs total

CVE-2022-20919 8.6 HIGH Cisco IOS and IOS XE Software Common Industrial Protocol Request Denial of Service Vulnera
CVE-2022-20856 8.6 HIGH Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Mobility Den
CVE-2022-20848 8.6 HIGH Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst 9100 Series Access Poi
CVE-2022-20847 8.6 HIGH Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family DHCP Processing Den
CVE-2022-20818 7.8 HIGH Cisco SD-WAN Software Privilege Escalation Vulnerabilities
CVE-2022-20775 7.8 HIGH Cisco SD-WAN Software Privilege Escalation Vulnerability
CVE-2022-20945 7.4 HIGH Cisco Catalyst 9100 Series Access Points Association Request Denial of Service Vulnerabili
CVE-2022-20769 7.4 HIGH Cisco Wireless LAN Controller AireOS Software FIPS Mode Denial of Service Vulnerability
CVE-2022-20930 6.7 MEDIUM Cisco SD-WAN Software Arbitrary File Corruption Vulnerability
CVE-2022-20810 6.5 MEDIUM Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family SNMP Information Di
CVE-2022-20662 6.1 MEDIUM Cisco Duo for macOS Authentication Bypass Vulnerability
CVE-2022-20851 5.5 MEDIUM Cisco IOS XE Software Web UI Command Injection Vulnerability
CVE-2022-20850 5.5 MEDIUM Cisco SD-WAN Arbitrary File Deletion Vulnerability
CVE-2022-20844 5.3 MEDIUM Cisco Software-Defined Application Visibility and Control on Cisco vManage Static Username
CVE-2022-20728 4.7 MEDIUM Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-266

V. Comments for CVE-2022-20855

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