Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2022.4647
MSA-22-0023: Stored XSS and page denial of service risks due
to recursive rendering in Mustache template helpers
20 September 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Moodle
Publisher: Moodle
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2022-40313
Original Bulletin:
https://moodle.org/mod/forum/discuss.php?d=438392&parent=1764793
Comment: CVSS (Max): None available when published
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MSA-22-0023: Stored XSS and page denial of service risks due to recursive
rendering in Mustache template helpers
Recursive rendering of Mustache template helpers containing user input could,
in some cases, result in an XSS risk or a page failing to load.
Severity/Risk: Serious
Versions affected: 4.0 to 4.0.3, 3.11 to 3.11.9, 3.9 to 3.9.16 and earlier
unsupported versions
Versions fixed: 4.0.4, 3.11.10 and 3.9.17
Reported by: Adam Roberts, NCC Group
CVE identifier: CVE-2022-40313
Changes (master): http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-68066
Tracker issue: MDL-68066 Stored XSS and page denial of service risks due to
recursive rendering in Mustache template
helpers
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