Multiple vulnerabilities in Moodle

1) Improper Privilege Management

EUVDB-ID: #VU38992

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7489

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to read and manipulate data.

In Moodle 2.x and 3.x, remote authenticated users can take ownership of arbitrary blogs by editing an external blog link.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 2.7.0 - 3.2.2

External links

http://moodle.org/mod/forum/discuss.php?d=352353

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.

2) Input validation error

EUVDB-ID: #VU38993

Risk: Medium

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

CVE-ID: CVE-2017-7490

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

In Moodle 2.x and 3.x, searching of arbitrary blogs is possible because a capability check is missing.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 2.7.0 - 3.2.2

External links

http://moodle.org/mod/forum/discuss.php?d=352354

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.

3) Cross-site request forgery

EUVDB-ID: #VU38994

Risk: Low

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

CVE-ID: CVE-2017-7491

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. 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: 2.7.0 - 3.2.2

External links

http://moodle.org/mod/forum/discuss.php?d=352355

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) Cross-site scripting

EUVDB-ID: #VU39346

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7298

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

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to read and manipulate data.

In Moodle 3.2.2+, there is XSS in the Course summary filter of the "Add a new course" page, as demonstrated by a crafted attribute of an SVG element.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 3.2.2

External links

http://www.daimacn.com/index.php/post/12.html
http://www.daimacn.com/post/12.html
http://www.securityfocus.com/bid/97182

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.