MSA-13-0030: Information leak through RSS

by Michael de Raadt.  

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Description:When impersonating another user using RSS tokens, an error was displayed, but block information relevant to the person being impersonated was shown.
Issue summary:Rss feed error shows user logged in and blocks on page that shouldn't be there.
Severity/Risk:Serious
Versions affected:2.5, 2.4 to 2.4.4, 2.3 to
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MSA-13-0029: XSS risk in conditional activities

by Michael de Raadt.  

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Description:Conditional access rule values for user fields were able to contain unescaped HTML/JS that would be output to users.
Issue summary:Conditional activities: user field displays as database column name, values not escaped
Severity/Risk:Minor
Versions affected:2.5, 2.4 to 2.4.4
Versions fixed:2.5.1, 2.4.5
Reported by:J
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MSA-13-0028: Answer information revealed in Lesson activity

by Michael de Raadt.  

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Description:It was possible to determine answers from ID values in Lesson activity matching questions.
Issue summary:Matching question in lesson could easily manipulated through view sources
Severity/Risk:Minor
Versions affected:2.5, 2.4 to 2.4.4, 2.3 to 2.3.7, earlier unsupported versions
Versions fixed:2.5.1, 2.4.5 and
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MSA-13-0027: Access issue in Chat module

by Michael de Raadt.  

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Description:Users were able to access a daemon-mode Chat activity without the required capability.
Issue summary:Missing privilege check in mod/chat/gui_sockets/index.php
Severity/Risk:Minor
Versions affected:2.5, 2.4 to 2.4.4, 2.3 to 2.3.7, 2.2 to 2.2.10, earlier unsupported versions
Versions fixed:2.5.1, 2.4.5, 2.3.8 and
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