Vulnerability Bulletins |
MSA-21-0035: Arbitrary file read by site administrators via LaTeX preamble |
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| Affected software | PHP |
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by Michael Hawkins. Insufficient escaping of the LaTeX preamble made it possible for site administrators to read files available to the HTTP server system account.Severity/Risk:SeriousVersions affected:3.11 to 3.11.2, 3.10 to 3.10.6, 3.9 to 3.9.9 and earlier unsupported versionsVersions fixed:3.11.3, 3.10.7 and 3.9.10Reported by:raisin_bugbountyWorkaround:Hard-code the value of the LaTeX preamble into $CFG->forced_plugin_settings[filter_tex][latexpreamble] within the sites config.php More info: https://moodle.org/mod/forum/discuss.php?d=427106&parent=1719328 |
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