MSA-21-0016: Files API should mitigate denial-of-service risk when adding to the draft file area

by Michael Hawkins.  

A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits.


Severity/Risk:Serious
Versions affected:3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions
Versions fixed:3.11, 3.10.4, 3.9.7, 3.8.9 and 3.5.18
Reported by:Ben Samtleben
CVE identifier:CVE-2021-32476
Changes (master):http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-69028
Tracker issue:MDL-69028 Files API should mitigate denial-of-service risk when adding to the draft file area

Read more https://moodle.org/mod/forum/discuss.php?d=422310&parent=1701635