7.4
HIGH
CVE-2021-34599
CODESYS Git Unvalidated HTTPS Certificate Vulnerability
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.

INFO

Published Date :

Dec. 1, 2021, 9:15 a.m.

Last Modified :

July 28, 2022, 9:34 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2021-34599 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Codesys git
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-34599.

URL Resource
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-34599 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-34599 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jul. 28, 2022

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 12, 2022

    Action Type Old Value New Value
    Removed CVSS V3.1 CERT VDE AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
    Added CVSS V3.1 CERT VDE AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
    Removed CVSS V3.1 Reason UI-User Interaction not identified
    Removed CVSS V3.1 Reason S-Unclear if Scope change occurs
  • Initial Analysis by [email protected]

    Dec. 02, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download No Types Assigned https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download Vendor Advisory
    Added CPE Configuration AND OR *cpe:2.3:a:codesys:git:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.0 OR cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.17.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-34599 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-34599 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.09 }} -0.00%

score

0.37503

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability