CVE-2021-34599

Improper Certificate Validation in CODESYS Git

Description

Affected versions of CODESYS Git in Versions prior to V1.1.0.0 lack certificate validation in HTTPS handshakes. CODESYS Git does not implement certificate validation by default, so it does not verify that the server provides a valid and trusted HTTPS certificate. Since the certificate of the server to which the connection is made is not properly verified, the server connection is vulnerable to a man-in-the-middle attack.

Remediation

Solution:

  • CODESYS GmbH has released CODESYS Git V1.1.0.0 to solve this vulnerability issue. CODESYS Git V1.1.0.0 can be downloaded and installed directly with the CODESYS Installer. CODESYS Git requires a CODESYS Development System version of V3.5.17.0 or newer.

Category

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory codesys.com
Affected: CODESYS CODESYS Git
Published at:
Updated at:

References

Link Tags
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34599?
CVE-2021-34599 has been scored as a high severity vulnerability.
How to fix CVE-2021-34599?
To fix CVE-2021-34599: CODESYS GmbH has released CODESYS Git V1.1.0.0 to solve this vulnerability issue. CODESYS Git V1.1.0.0 can be downloaded and installed directly with the CODESYS Installer. CODESYS Git requires a CODESYS Development System version of V3.5.17.0 or newer.
Is CVE-2021-34599 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34599 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34599?
CVE-2021-34599 affects CODESYS CODESYS Git.
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