Moodle security notifications public

[Michael de Raadt <michaeld () moodle com>]

The following security notifications are now public. Thanks to OSS 
members for their cooperation.

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MSA-13-0020: Capability issue in Assignment

Description:       The assignment module was not checking capabilities
                   for users downloading all assignments as a zip.
Issue summary:     Students can download assignments submitted by other
                   students
Severity/Risk:     Serious
Versions affected: 2.4 to 2.4.3, 2.3 to 2.3.6
Versions fixed:    2.5, 2.4.4 and 2.3.7
Reported by:       Phillip Franks
Issue no.:         MDL-38443
CVE Identifier:    CVE-2013-2079
Changes (master): 
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-38443

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MSA-13-0021: Potential information leak in Gradebook

Description:       The Gradebook's Overview report was showing grade
                   totals that may have incorrectly included hidden
                   grades.
Issue summary:     The method for figuring out
                   showtotalsifcontainhidden on the overview report is
                   flawed
Severity/Risk:     Minor
Versions affected: 2.4 to 2.4.3, 2.3 to 2.3.6,
                   earlier unsupported versions
Versions fixed:    2.5, 2.4.4 and 2.3.7
Reported by:       Andrew Davis
Issue no.:         MDL-37475
CVE Identifier:    CVE-2013-2080
Workaround:        Ensure all courses have the same value for hiding
                   grades in the gradebook. This is set at
                   Administration > Grades > Course grade settings >
                   Hide totals if they contain hidden items
Changes (master): 
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-37475

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MSA-13-0022: Information leak in hub registration

Description:       When registering a site on a hub (not Moodle.net)
                   site information was being sent to the hub
                   regardless of settings chosen.
Issue summary:     Moodle send site information to a hub even though
                   it's unchecked
Severity/Risk:     Minor
Versions affected: 2.4 to 2.4.3, 2.3 to 2.3.6, 2.2 to 2.2.9,
                   earlier unsupported versions
Versions fixed:    2.5, 2.4.4, 2.3.7 and 2.2.10
Reported by:       Jérôme Mouneyrac
Issue no.:         MDL-37822
CVE Identifier:    CVE-2013-2081
Changes (master): 
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-37822

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MSA-13-0023: Permission issue in blog comments

Description:       There was no check of permissions for viewing
                   comments on blog posts.
Issue summary:     Blog comment validation should verify that the user
                   can view a post.
Severity/Risk:     Serious
Versions affected: 2.4 to 2.4.3, 2.3 to 2.3.6, 2.2 to 2.2.9,
                   earlier unsupported versions
Versions fixed:    2.5, 2.4.4, 2.3.7 and 2.2.10
Reported by:       Dan Poltawski
Issue no.:         MDL-37245
CVE Identifier:    CVE-2013-2082
Changes (master): 
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-37245

=======================================================================
MSA-13-0024: Form filtering issue

Description:       Form elements named using a specific naming
                   scheme were not being filtered correctly
Issue summary:     Elements named foo[i] are not cleaned properly
Severity/Risk:     Minor
Versions affected: 2.4 to 2.4.3, 2.3 to 2.3.6, 2.2 to 2.2.9,
                   earlier unsupported versions
Versions fixed:    2.5, 2.4.4, 2.3.7 and 2.2.10
Reported by:       Dan Poltawski
Issue no.:         MDL-38885
CVE Identifier:    CVE-2013-2083
Changes (master): 
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-38885