6.5
MEDIUM
CVE-2020-28206
Bitrix24 Bitrix Framework User Enumeration and Authentication Brute Force Vulnerability
Description

An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An "User enumeration and Improper Restriction of Excessive Authentication Attempts" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.

INFO

Published Date :

Dec. 2, 2020, 7:15 p.m.

Last Modified :

Dec. 4, 2020, 2:31 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2020-28206 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 Bitrix24 bitrix_framework
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-2020-28206.

URL Resource
https://justrealstag.medium.com/user-enumeration-improper-restriction-of-excessive-authentication-attempts-in-bitrix-98933a97e0e6 Exploit Third Party 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-2020-28206 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-28206 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
  • Initial Analysis by [email protected]

    Dec. 04, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://justrealstag.medium.com/user-enumeration-improper-restriction-of-excessive-authentication-attempts-in-bitrix-98933a97e0e6 No Types Assigned https://justrealstag.medium.com/user-enumeration-improper-restriction-of-excessive-authentication-attempts-in-bitrix-98933a97e0e6 Exploit, Third Party Advisory
    Added CWE NIST CWE-307
    Added CPE Configuration OR *cpe:2.3:a:bitrix24:bitrix_framework:20.0:*:*:*:*:*:*:*
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-2020-28206 is associated with the following CWEs:

Exploit Prediction

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

0.39 }} 0.10%

score

0.73616

percentile

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