CVE-2021-34599

Improper Certificate Validation in CODESYS Git

Published Dec 1, 2021 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
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

Vendor 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.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21249 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.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Sep 17, 2024, 2:32 AM
Reserved
Jun 10, 2021, 12:00 AM
Status
Modified
Published
Dec 1, 2021, 9:15 AM
Modified
Jun 17, 2026, 3:56 AM