Vulnerability in Codesys Git
CVE-2021-34599
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.
Vulnerability class: Improper Certificate Validation
EPSS: 0.005 (37.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Codesys Git — versions CODESYS Git
- Codesys Development_system
- Codesys Git
Weakness classification (CWE)
References
- info@cert.vde.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34599?
- CVE-2021-34599 is a high-severity vulnerability in Codesys Git, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2021-12-01.
- How severe is CVE-2021-34599?
- High severity. CVSS v3 base score is 7.4 out of 10.