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CVE-2022-42785— Wiesemann & Theis: Authentication bypass in Com-Server family

Quick assessment

Affected
Wiesemann & Theis Com-Server LC
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.

Wiesemann & Theis Com-Server Family是德国Wiesemann & Theis公司的一系列串行设备服务器。 Wiesemann & Theis Com-Server Family 存在访问控制错误漏洞。远程攻击者利用该漏洞可以通过修改HTTP GET请求在不知道密码的情况下登录系统。

CVSS 9.8 · Critical EPSS 1.09% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-42785

Vulnerability Information
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Vulnerability Title
Wiesemann & Theis: Authentication bypass in Com-Server family
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple W&T products of the ComServer Series are prone to an authentication bypass. An unathenticated remote attacker, can log in without knowledge of the password by crafting a modified HTTP GET Request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Wiesemann & Theis Com-Server Family 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wiesemann & Theis Com-Server Family是德国Wiesemann & Theis公司的一系列串行设备服务器。 Wiesemann & Theis Com-Server Family 存在访问控制错误漏洞。远程攻击者利用该漏洞可以通过修改HTTP GET请求在不知道密码的情况下登录系统。
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
Wiesemann & Theis Com-Server LC 1.0 ~ 1.48 -
Wiesemann & Theis Com-Server PoE 3 x Isolated 1.0 ~ 1.48 -
Wiesemann & Theis Com-Server 20mA 1.0 ~ 1.48 -
Wiesemann & Theis Com-Server ++ 1.0 ~ 1.48 -
Wiesemann & Theis AT-Modem-Emulator 1.0 ~ 1.48 -
Wiesemann & Theis Com-Server UL 1.0 ~ 1.48 -
Wiesemann & Theis Com-Server Highspeed 100BaseFX 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed 100BaseLX 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed Office 1 Port 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed Office 4 Port 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed Industry 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed OEM 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed Compact 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed Isolated 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed 19" 1Port 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed 19" 4Port 1.0 ~ 1.76 -
Wiesemann & Theis Com-Server Highspeed PoE 1.0 ~ 1.76 -

II. Public POCs for CVE-2022-42785

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III. Intelligence Information for CVE-2022-42785

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Other References for CVE-2022-42785 (1)

Same Patch Batch · Wiesemann & Theis · 2022-11-10 · 3 CVEs total

CVE-2022-42787 8.8 HIGH Wiesemann & Theis: Small number space for allocating session id in Com-Server family
CVE-2022-42786 5.4 MEDIUM Wiesemann & Theis: XSS vulnerability in web interface of the Com-Server family

IV. Related Vulnerabilities

Same product: Com-Server LC
Same vendor: Wiesemann & Theis
Same weakness: CWE-306

V. Comments for CVE-2022-42785

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