8.8
HIGH
CVE-2021-35413
Chamilo LMS Remote Code Execution Vulnerability
Description

A remote code execution (RCE) vulnerability in course_intro_pdf_import.php of Chamilo LMS v1.11.x allows authenticated attackers to execute arbitrary code via a crafted .htaccess file.

INFO

Published Date :

Dec. 3, 2021, 10:15 p.m.

Last Modified :

July 12, 2022, 5:42 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-35413 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 Chamilo chamilo_lms
References to Advisories, Solutions, and Tools

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-2021-35413 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-35413 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
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-94 CWE-862
  • Initial Analysis by [email protected]

    Dec. 06, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/andrejspuler/writeups/tree/main/chamilo-lms#authenticated-remote-code-execution-in-import-file No Types Assigned https://github.com/andrejspuler/writeups/tree/main/chamilo-lms#authenticated-remote-code-execution-in-import-file Exploit, Patch, Third Party Advisory
    Changed Reference Type https://github.com/chamilo/chamilo-lms/commit/2e5c004b57d551678a1815500ef91524ba7bb757 No Types Assigned https://github.com/chamilo/chamilo-lms/commit/2e5c004b57d551678a1815500ef91524ba7bb757 Patch, Third Party Advisory
    Changed Reference Type https://github.com/chamilo/chamilo-lms/commit/905a21037ebc9bc5369f0fb380177cb56f496f5c No Types Assigned https://github.com/chamilo/chamilo-lms/commit/905a21037ebc9bc5369f0fb380177cb56f496f5c Patch, Third Party Advisory
    Changed Reference Type https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-66-2021-05-21-High-impact-very-low-risk-Authenticated-RCE-in-accessory-script No Types Assigned https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-66-2021-05-21-High-impact-very-low-risk-Authenticated-RCE-in-accessory-script Patch, Vendor Advisory
    Added CWE NIST CWE-94
    Added CPE Configuration OR *cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* versions from (including) 1.11.0 up to (including) 1.11.16
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-2021-35413 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-2021-35413 weaknesses.

Exploit Prediction

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

2.10 }} 0.47%

score

0.89531

percentile

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