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AUSCERT Security Bulletin
ASB-2013.0085
A number of vulnerabilities have been identified in Moodle
17 July 2013
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AusCERT Security Bulletin Summary
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Product: Moodle
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-2246 CVE-2013-2245 CVE-2013-2244
CVE-2013-2243 CVE-2013-2242
Member content until: Friday, August 16 2013
OVERVIEW
A number of vulnerabilities have been identified in Moodle prior to
2.5.1, 2.4.5, 2.3.8 and 2.2.11. [1, 2, 3, 4, 5]
IMPACT
The vendor has provided the following details regarding these
vulnerabilities:
CVE-2013-2242: "Users were able to access a daemon-mode Chat activity
without the required capability." [1]
CVE-2013-2243: "It was possible to determine answers from ID values in
Lesson activity matching questions." [2]
CVE-2013-2244: "Conditional access rule values for user fields were able
to contain unescaped HTML/JS that would be output to users." [3]
CVE-2013-2245: "When impersonating another user using RSS tokens, an
error was displayed, but block information relevant to the person being
impersonated was shown." [4]
CVE-2013-2246: "The Feedback module was showing personal information to
users without the needed capability" [5]
MITIGATION
The vendor has stated that these issues have been corrected in versions
2.5.1, 2.4.5, 2.3.8 and 2.2.11. [1, 2, 3, 4, 5]
REFERENCES
[1] MSA-13-0027: Access issue in Chat module
https://moodle.org/mod/forum/discuss.php?d=232498
[2] MSA-13-0028: Answer information revealed in Lesson activity
https://moodle.org/mod/forum/discuss.php?d=232500
[3] MSA-13-0029: XSS risk in conditional activities
https://moodle.org/mod/forum/discuss.php?d=232501
[4] MSA-13-0030: Information leak through RSS
https://moodle.org/mod/forum/discuss.php?d=232502
[5] MSA-13-0031: Personal information leak in Feedback activity
https://moodle.org/mod/forum/discuss.php?d=232503
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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