Multiple vulnerabilities in Moodle

Published: 2024-06-19

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2024-38274 CVE-2024-38273 CVE-2024-38277 CVE-2024-38275 CVE-2024-38276
CWE-ID	CWE-79 CWE-200 CWE-284 CWE-352
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Moodle Web applications / Other software
Vendor	moodle.org

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU92229

Risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38274

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

Exploit availability: No

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 within calendar's event title when deleting the event. A remote attacker can inject 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 update from vendor's website.

Vulnerable software versions

Moodle: 4.1.0 - 4.4.0

CPE2.3

External links

http://moodle.org/mod/forum/discuss.php?d=459499
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81412

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Information disclosure

EUVDB-ID: #VU92252

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38273

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to insufficient capability checks. A remote user can gain access to BigBlueButton join URLs they did not have permission to access.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.1.0 - 4.4.0

CPE2.3

External links

http://moodle.org/mod/forum/discuss.php?d=459498
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81778

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Improper access control

EUVDB-ID: #VU92250

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38277

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to QR login key and auto-login key for the Moodle mobile app are not generated as separate keys. A remote attacker can use the same key between the two.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.1.0 - 4.4.0

CPE2.3

External links

http://moodle.org/mod/forum/discuss.php?d=459502
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-80959

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Information disclosure

EUVDB-ID: #VU92246

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38275

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to HTTP authorization headers.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.1.0 - 4.4.0

CPE2.3

External links

http://moodle.org/mod/forum/discuss.php?d=459500
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81774

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Cross-site request forgery

EUVDB-ID: #VU92241

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38276

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin within confirm_sesskey. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 4.1.0 - 4.4.0

CPE2.3

External links

http://moodle.org/mod/forum/discuss.php?d=459501
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81890

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.