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CVE-2022-42787— Wiesemann & Theis: Small number space for allocating session id in Com-Server family

CVSS 8.8 · High EPSS 0.91% · P76
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I. Basic Information for CVE-2022-42787

Vulnerability Information
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Vulnerability Title
Wiesemann & Theis: Small number space for allocating session id in Com-Server family
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple W&T products of the Comserver Series use a small number space for allocating sessions ids. After login of an user an unathenticated remote attacker can brute force the users session id and get access to his account on the the device. As the user needs to log in for the attack to be successful a user interaction is required.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用不充分的随机数
Source: NVD (National Vulnerability Database)
Vulnerability Title
Wiesemann & Theis Com-Server Family 安全特征问题特征问题漏洞
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 存在安全特征问题漏洞。攻击者利用该漏洞强行使用会话id并访问设备上的帐户。
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

VendorProductAffected VersionsCPESubscribe
Wiesemann & TheisCom-Server LC 1.0 ~ 1.48 -
Wiesemann & TheisCom-Server PoE 3 x Isolated 1.0 ~ 1.48 -
Wiesemann & TheisCom-Server 20mA 1.0 ~ 1.48 -
Wiesemann & TheisCom-Server ++ 1.0 ~ 1.48 -
Wiesemann & TheisAT-Modem-Emulator 1.0 ~ 1.48 -
Wiesemann & TheisCom-Server UL 1.0 ~ 1.48 -
Wiesemann & TheisCom-Server Highspeed 100BaseFX 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed 100BaseLX 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed Office 1 Port 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed Office 4 Port 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed Industry 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed OEM 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed Compact 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed Isolated 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed 19" 1Port 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed 19" 4Port 1.0 ~ 1.76 -
Wiesemann & TheisCom-Server Highspeed PoE 1.0 ~ 1.76 -

II. Public POCs for CVE-2022-42787

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III. Intelligence Information for CVE-2022-42787

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

CVE-2022-427859.8 CRITICALWiesemann & Theis: Authentication bypass in Com-Server family
CVE-2022-427865.4 MEDIUMWiesemann & 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-330

V. Comments for CVE-2022-42787

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