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CVE-2022-20923— Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers IPSec VPN Server Authentication Bypass Vulnerability

Quick assessment

Affected
Cisco Cisco Small Business RV Series Router Firmware
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 Small Business是美国思科（Cisco）公司的一个交换机。 Cisco Small Business RV110W、RV130、RV130W 和 RV215W 路由器存在安全漏洞，该漏洞源于IPSec VPN 服务器身份验证功能中存在一个漏洞，攻击者利用该漏洞可以绕过身份验证控制并访问 IPSec VPN 网络。

CVSS 4.0 · Medium EPSS 0.91% · P57

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2022-20923

Vulnerability Information
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Vulnerability Title
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers IPSec VPN Server Authentication Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to the improper implementation of the password validation algorithm. An attacker could exploit this vulnerability by logging in to the VPN from an affected device with crafted credentials. A successful exploit could allow the attacker to bypass authentication and access the IPSec VPN network. The attacker may obtain privileges that are the same level as an administrative user, depending on the crafted credentials that are used. Cisco has not released software updates that address this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证算法的不正确实现
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Small Business 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Small Business是美国思科（Cisco）公司的一个交换机。 Cisco Small Business RV110W、RV130、RV130W 和 RV215W 路由器存在安全漏洞，该漏洞源于IPSec VPN 服务器身份验证功能中存在一个漏洞，攻击者利用该漏洞可以绕过身份验证控制并访问 IPSec VPN 网络。
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 Small Business RV Series Router Firmware n/a -

II. Public POCs for CVE-2022-20923

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III. Intelligence Information for CVE-2022-20923

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Vendor Advisories for CVE-2022-20923 (1)

Same Patch Batch · Cisco · 2022-09-08 · 3 CVEs total

CVE-2022-20696 7.5 HIGH Cisco SD-WAN vManage Software Unauthenticated Access to Messaging Services Vulnerability
CVE-2022-20863 4.3 MEDIUM Cisco Webex Meetings App Character Interface Manipulation Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Small Business RV Series Router Firmware
Same vendor: Cisco
Same weakness: CWE-303

V. Comments for CVE-2022-20923

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