Multiple vulnerabilities in Moodle



Published: 2020-07-20
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-14320
CVE-2020-14321
CVE-2020-14322
CWE-ID CWE-79
CWE-264
CWE-20
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #2 is available.
Vulnerable software
Subscribe
Moodle
Web applications / Other software

Vendor moodle.org

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU31681

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-14320

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: Yes

Description

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 in admin task logs filter. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 3.9.0, 3.7.0 - 3.7.6, 3.8.0 - 3.8.3


CPE2.3 External links

http://moodle.org/mod/forum/discuss.php?d=407392

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU31682

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-14321

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions within ourse enrolments. A remote authenticated attacker with teacher permission can escalate privileges from teacher role into manager role. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 3.9.0, 3.5.0 - 3.5.12, 3.7.0 - 3.7.6, 3.8.0 - 3.8.3


CPE2.3 External links

http://moodle.org/mod/forum/discuss.php?d=407393

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Input validation error

EUVDB-ID: #VU31683

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-14322

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in yui_combo. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 3.9.0, 3.5.0 - 3.5.12, 3.7.0 - 3.7.6, 3.8.0 - 3.8.3


CPE2.3 External links

http://moodle.org/mod/forum/discuss.php?d=407394

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###