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TITLE:
Moodle Multiple Information Disclosure and Security Bypass
Vulnerabilities

SECUNIA ADVISORY ID:
SA48442

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48442/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48442

RELEASE DATE:
2012-03-20

DISCUSS ADVISORY:
http://secunia.com/advisories/48442/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/48442/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=48442

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Multiple security issues and vulnerabilities have been reported in
Moodle, which can be exploited by malicious users to disclose
sensitive information and bypass certain security restrictions and by
malicious people to bypass certain security restrictions.

1) An error exists in the handling of access permissions in the
database activity module when exporting data, which can be exploited
to disclose the content of database entries for other groups.

Successful exploitation of this vulnerability requires permissions to
export data via the database activity module.

2) An error in the web service function "core_user_update_users"
resets the password when updating a user, which can be exploited to
log in as a user with an empty password.

3) Multiple errors exist in the handling of access permissions in
repository/coursefiles/db/access.php,
repository/filesystem/db/access.php, repository/local/db/access.php,
and repository/webdav/db/access.php, which can be exploited to
disclose the contents of otherwise restricted repositories.

4) An error exists in the handling of access permissions in the
"load_for_user()" function in lib/navigationlib.php (when "Full name
format" is set to "First name" in "Site Policies"), which can be
exploited to disclose users' last names on the breadcrumbs page.

5) An error exists in the handling of access permissions in the
"definition()" function in grade/export/grade_export_form.php when
exporting grades, which can be exploited to disclose hidden grades.

Successful exploitation of this vulnerability requires permissions to
export grades.

6) An error exists in the handling of access permissions in the
"fill_table()" function in grade/report/overview/lib.php, which can
be exploited to disclose hidden courses in the overview report.

7) An error exists in the handling of access permissions in
mod/forum/index.php, which can be exploited to subscribe to forums
for otherwise restricted courses.

Successful exploitation of this vulnerability requires a manager
account.

8) An error exists in the handling of access permissions in the
"coursetag_get_tagged_courses()" function in tag/coursetagslib.php
when displaying tag searches, which can be exploited to disclose
hidden courses.

9) An error exists in the handling of access permissions in the
"get_enrolled_users()" function in enrol/externallib.php, which can
be exploited to disclose enrolled users for a course.

This vulnerability is only reported in versions 2.2 through 2.2.1.

The security issues and vulnerabilities are reported in versions 2.1
through 2.1.4+ and 2.2 through 2.2.1+.

SOLUTION:
Update to version 2.1.5 or 2.2.2.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Frederic Hoogstoel.
2) Fabio Souto.
3) Andrea Bicciolo.
4) John Fitchett.
5) Kathryn Fortin.
6) Mark Nelson.
7) Eloy Lafuente.
8) Ivo Smelhaus.
9) Petr Skoda.

ORIGINAL ADVISORY:
Moodle release notes:
http://docs.moodle.org/dev/Moodle_2.1.5_release_notes
http://docs.moodle.org/dev/Moodle_2.2.2_release_notes

Moodle (MSA-12-0013, MSA-12-0014, MSA-12-0016, MSA-12-0017,
MSA-12-0018, MSA-12-0019, MSA-12-0020, MSA-12-0021, MSA-12-0023):
http://moodle.org/mod/forum/discuss.php?d=198621
http://moodle.org/mod/forum/discuss.php?d=198622
http://moodle.org/mod/forum/discuss.php?d=198624
http://moodle.org/mod/forum/discuss.php?d=198625
http://moodle.org/mod/forum/discuss.php?d=198627
http://moodle.org/mod/forum/discuss.php?d=198628
http://moodle.org/mod/forum/discuss.php?d=198629
http://moodle.org/mod/forum/discuss.php?d=198630
http://moodle.org/mod/forum/discuss.php?d=198632

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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