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CVE-2022-31803— CODESYS Gateway Server V2 prone to Denial of Service Attack

CVSS 5.3 · Medium EPSS 0.35% · P58
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I. Basic Information for CVE-2022-31803

Vulnerability Information
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Vulnerability Title
CODESYS Gateway Server V2 prone to Denial of Service Attack
Source: NVD (National Vulnerability Database)
Vulnerability Description
In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauthenticated attacker to consume all available TCP connections and prevent legitimate users or clients from establishing a new connection to the CODESYS Gateway Server V2. Existing connections are not affected and therefore remain intact.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
CODESYS Gateway Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CODESYS Gateway Server是CODESYS 公司的一个扩展的 CODESYS 网关，将 CODESYS 自动化服务器连接到本地网络中的 CODESYS PLC。 CODESYS Gateway Server V2 存在资源管理错误漏洞，该漏洞源于对 TCP 客户端连接活动的检查不足。未经身份验证的攻击者利用该漏洞可使用所有可用的 TCP 连接，并阻止合法用户或客户端与 CODESYS 网关服务器 V2 建立新连接。
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
CODESYSCODESYS Gateway Server V2 V2 ~ V2.3.9.38 -

II. Public POCs for CVE-2022-31803

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III. Intelligence Information for CVE-2022-31803

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Same Patch Batch · CODESYS · 2022-06-24 · 14 CVEs total

CVE-2022-318029.8 CRITICALPartial string comparison in CODESYS gateway server
CVE-2022-318069.8 CRITICALInsecure default settings in CODESYS Runtime Toolkit 32 bit full and CODESYS PLCWinNT
CVE-2022-321378.8 HIGHCODESYS Runtime System prone to heap based buffer overflow
CVE-2022-321388.8 HIGHCODESYS runtime system prone to denial of service due to Unexpected Sign Extension
CVE-2022-321438.8 HIGHCODESYS runtime system prone to directory acces
CVE-2022-19658.1 HIGHCODESYS runtime system prone to file deletion due to improper error handling
CVE-2022-321428.1 HIGHCODESYS runtime system prone to denial of service due to use of out of range pointer
CVE-2022-318047.5 HIGHCODESYS Gateway server prone to denial of service attack due to excessive memory allocatio
CVE-2022-318057.5 HIGHInsecure transmission of credentials
CVE-2022-321366.5 MEDIUMCodesys runtime systems: Access of uninitialised pointer lead to denial of service.
CVE-2022-321396.5 MEDIUMCODESYS runtime system prone to denial of service due to out of bounds read
CVE-2022-321406.5 MEDIUMCODESYS runtime system prone to denial of service due to buffer copy
CVE-2022-321416.5 MEDIUMCODESYS runtime system prone to denial of service due to buffer over read

IV. Related Vulnerabilities

Same product: CODESYS Gateway Server V2
Same vendor: CODESYS
Same weakness: CWE-400

V. Comments for CVE-2022-31803

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