SB2019091610 - Multiple vulnerabilities in Moodle

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Main Vulnerability Database SB2019091610

SB2019091610 - Multiple vulnerabilities in Moodle

Published: September 16, 2019

Security Bulletin ID SB2019091610
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 17% Low 83%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Use of Obsolete Function (CVE-ID: N/A)

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to the analytics Python Machine Learning backend uses vulnerable components. A remote attacker can bypass certain security restrictions.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-14829)

The vulnerability allows a remote authenticated user to gain access to sensitive information.

The vulnerability exists due to the activity creation capabilities were not correctly respected when selecting the activity to use for a course in single activity mode. A remote authenticated user can gain access to sensitive information.


3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-14828)

The vulnerability allows a remote attacker to escalate privileges within the application.

The vulnerability exists due to software assigns teacher privileges by default to users that create courses. A remote authenticated user can gain unauthorized access to courses.



4) Cross-site scripting (CVE-ID: CVE-2019-14827)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the Mustache templates via recursive rendering from contexts. A remote authenticated attacker can use Mustache helper tags to execute arbitrary JavaScript code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


5) Open redirect (CVE-ID: CVE-2019-14830)

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in mobile launch endpoint. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to reveal mobile access tokens.

Note: This does not affect sites with a forced URL scheme configured, mobile service disabled, or where the mobile app login method is "via the app".


6) Open redirect (CVE-ID: CVE-2019-14831)

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data passed via forum subscribe link, if forced subscription mode is enabled. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.


Remediation

Install update from vendor's website.

References