#VU43501 Information disclosure in Moodle - CVE-2012-4403

Vulnerability identifier: #VU43501

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-4403

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

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

theme/yui_combo.php in Moodle 2.3.x before 2.3.2 does not properly construct error responses for the drag-and-drop script, which allows remote attackers to obtain the installation path by sending a request for a nonexistent resource and then reading the response.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Moodle: 2.3 - 2.3.1

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External links
https://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-35168
https://moodle.org/mod/forum/discuss.php?d=211560
https://openwall.com/lists/oss-security/2012/09/17/1

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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.