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CVE-2022-32140— CODESYS runtime system prone to denial of service due to buffer copy

Quick assessment

Affected
CODESYS Runtime Toolkit
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.

CODESYS是德国3S-Smart Software Solutions的一套控制器开发系统 CODESYS 多款产品存在缓冲区错误漏洞，该漏洞源于应用中内部无法正确处理关联结构化数据的长度。攻击者利用该漏洞可以制作带有错误数据长度的关联结构化数据的请求导致缓冲区过度读取，从而实现拒绝服务攻击。

CVSS 6.5 · Medium EPSS 1.04% · P63

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-32140

Vulnerability Information
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Vulnerability Title
CODESYS runtime system prone to denial of service due to buffer copy
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple CODESYS products are affected to a buffer overflow.A low privileged remote attacker may craft a request, which can cause a buffer copy without checking the size of the service, resulting in a denial-of-service condition. User Interaction is not required.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
CODESYS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CODESYS是德国3S-Smart Software Solutions的一套控制器开发系统 CODESYS 多款产品存在缓冲区错误漏洞，该漏洞源于应用中内部无法正确处理关联结构化数据的长度。攻击者利用该漏洞可以制作带有错误数据长度的关联结构化数据的请求导致缓冲区过度读取，从而实现拒绝服务攻击。
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
CODESYS Runtime Toolkit V2 ~ V2.4.7.57 -
CODESYS PLCWinNT V2 ~ V2.4.7.57 -

II. Public POCs for CVE-2022-32140

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III. Intelligence Information for CVE-2022-32140

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

CVE-2022-31802 9.8 CRITICAL Partial string comparison in CODESYS gateway server
CVE-2022-31806 9.8 CRITICAL Insecure default settings in CODESYS Runtime Toolkit 32 bit full and CODESYS PLCWinNT
CVE-2022-32137 8.8 HIGH CODESYS Runtime System prone to heap based buffer overflow
CVE-2022-32138 8.8 HIGH CODESYS runtime system prone to denial of service due to Unexpected Sign Extension
CVE-2022-32143 8.8 HIGH CODESYS runtime system prone to directory acces
CVE-2022-1965 8.1 HIGH CODESYS runtime system prone to file deletion due to improper error handling
CVE-2022-32142 8.1 HIGH CODESYS runtime system prone to denial of service due to use of out of range pointer
CVE-2022-31804 7.5 HIGH CODESYS Gateway server prone to denial of service attack due to excessive memory allocatio
CVE-2022-31805 7.5 HIGH Insecure transmission of credentials
CVE-2022-32136 6.5 MEDIUM Codesys runtime systems: Access of uninitialised pointer lead to denial of service.
CVE-2022-32139 6.5 MEDIUM CODESYS runtime system prone to denial of service due to out of bounds read
CVE-2022-32141 6.5 MEDIUM CODESYS runtime system prone to denial of service due to buffer over read
CVE-2022-31803 5.3 MEDIUM CODESYS Gateway Server V2 prone to Denial of Service Attack

IV. Related Vulnerabilities

Same product: Runtime Toolkit
Same vendor: CODESYS
Same weakness: CWE-120

V. Comments for CVE-2022-32140

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