CVE-2021-34593 (GCVE-0-2021-34593)

Vulnerability from cvelistv5 – Published: 2021-10-26 09:55 – Updated: 2024-09-17 04:10
VLAI
Title
CODESYS V2 runtime: unauthenticated invalid requests may result in denial-of-service
Summary
In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
CODESYS CODESYS V2 Affected: Runtime Toolkit 32 bit full , < V2.4.7.56 (custom)
Affected: PLCWinNT , < V2.4.7.56 (custom)
Create a notification for this product.
Date Public
2021-10-25 00:00
Credits
This issue was discovered by Steffen Robertz and Gerhard Hechenberger from the SEC Consult Vulnerability Lab.
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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