SB2020031711 - Multiple vulnerabilities in Moodle
Published: March 17, 2020 Updated: March 17, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2020-1756)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in "admin/tool/phpunit/webrunner.php" file. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.
2) Spoofing attack (CVE-ID: CVE-2020-1755)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can use X-Forwarded-For headers to spoof a user's IP and bypass remote address checks.
3) Information disclosure (CVE-ID: CVE-2020-1754)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the grade history report does not respect Separate groups mode in the course settings. A remote authenticated attacker viewing the grade history report without the "access all groups" capability can view sensitive information from other groups.
Remediation
Install update from vendor's website.