CVE-2021-39181
High
Description
OpenOlat is a web-based learning management system (LMS). Prior to version 15.3.18, 15.5.3, and 16.0.0, using a prepared import XML file (e.g. a course) any class on the Java classpath can be instantiated, including spring AOP bean factories. This can be used to execute code arbitrary code by the attacker. The attack requires an OpenOlat user account with the authoring role. It can not be exploited by unregistered users. The problem is fixed in versions 15.3.18, 15.5.3, and 16.0.0. There are no known workarounds aside from upgrading.
SeverityHigh
CVSS8.8
Exploit probability—
ProductFrentix Openolat
PublishedSep 1, 2021
First seenSep 1, 2021
Weakness typeCWE-91CWE-91
How to fix
Update
- frentix openolat15.3.18, 15.5.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| frentix openolat | v < 15.3.18, 15.5.0 ≤ v < 15.5.3 | 15.3.18, 15.5.3 |
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