Recursion Denial of Service in Moodle File Repository by Moodle
CVE-2021-36395

7.5HIGH

Key Information:

Vendor

Moodle
Status
Moodle
Vendor
CVE Published:
6 March 2023

What is CVE-2021-36395?

In Moodle's file repository, a flaw exists in the URL parsing process that lacks proper handling for additional recursion. This oversight could lead to a denial of service through unintended recursive calls, potentially impacting system availability. It is crucial for users to update their Moodle installations to mitigate this risk and maintain optimal performance.

Affected Version(s)

Moodle 3.11, 3.10 to 3.10.4, 3.9 to 3.9.7 and earlier unsupported versions

References

https://moodle.org/mod/forum/discuss.php?d=424801

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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