CVE-2021-34584

CODESYS V2 web server: crafted requests could trigger a buffer over-read (DoS)

State: Published
Severity: 9.1 Critical
Published: Oct 26, 2021
Updated: Sep 16, 2024
Reserved: Jun 10, 2021

Description

Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	CERTVDE

Weaknesses

CWE-126 Buffer Over-read

Affected Products

Product	Versions
CODESYS V2CODESYS	all web servers to before V1.1.9.22Affected

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=
https://www.tenable.com/security/research/tra-2021-47

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