CVE-2022-22520— User enumeration vulnerability in MB connect line and Helmholz products
Quick assessment
Affected
MB connect line mymbCONNECT24
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.
MB CONNECT LINE mymbCONNECT24是德国MB CONNECT LINE公司的一款适用于虚拟环境的内部远程维护解决方案。 MB CONNECT LINE mymbCONNECT24、mbCONNECT24、Helmholz myREX24和myREX24.virtual v2.11.2 及之前版本存在安全漏洞，该漏洞源于远程未经身份验证的攻击者可以通过向web服务发送特定请求来枚举有效用户。
Possible ATT&CK Techniques 1 AI
T1087.001 · Local Account
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I. Basic Information for CVE-2022-22520
Vulnerability Information
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Vulnerability Title
User enumeration vulnerability in MB connect line and Helmholz products
Source: CVE Program / CVE List V5
Vulnerability Description
A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
MB CONNECT LINE mymbCONNECT24 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MB CONNECT LINE mymbCONNECT24是德国MB CONNECT LINE公司的一款适用于虚拟环境的内部远程维护解决方案。 MB CONNECT LINE mymbCONNECT24、mbCONNECT24、Helmholz myREX24和myREX24.virtual v2.11.2 及之前版本存在安全漏洞，该漏洞源于远程未经身份验证的攻击者可以通过向web服务发送特定请求来枚举有效用户。
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 |
|---|---|---|---|---|
| MB connect line | mymbCONNECT24 | 2 ~ 2.11.2 | - |
|
| MB connect line | mbCONNECT24 | 2 ~ 2.11.2 | - |
|
| Helmholz | myREX24 | 2 ~ 2.11.2 | - |
|
| Helmholz | myREX24.virtual | 2 ~ 2.11.2 | - |
|
II. Public POCs for CVE-2022-22520
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2022-22520 (1)
-
https://cert.vde.com/en/advisories/VDE-2022-039 x_refsource_CONFIRM
IV. Related Vulnerabilities
Same product: mymbCONNECT24
-
CVE-2021-34580
Remote user enumeration in mymbCONNECT24, mbCONNECT24 <= 2.9 -
CVE-2021-34575
Information Exposure in mymbCONNECT24, mbCONNECT24 <= 2.8.0 -
CVE-2021-34574
Password policy evasion in products of MB connect line and H -
CVE-2020-12527
Improper Access Validation in products of MB connect line an -
CVE-2020-12528
mymbCONNECT24 安全漏洞
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-
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V. Comments for CVE-2022-22520
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