CVE-2021-39181
This can be used to execute code arbitrary code by the attacker.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.91% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-91
- Affected
- frentix/openolat
- Source
- security-advisories@github.com
References
- https://github.com/OpenOLAT/OpenOLAT/commit/3f219ac457afde82e3be57bc614352ab92c05684Patch, Third Party Advisory
- https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-596v-3gwh-2m9wThird Party Advisory
- https://jira.openolat.org/browse/OO-5548Permissions Required
- https://github.com/OpenOLAT/OpenOLAT/commit/3f219ac457afde82e3be57bc614352ab92c05684Patch, Third Party Advisory
- https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-596v-3gwh-2m9wThird Party Advisory
- https://jira.openolat.org/browse/OO-5548Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.