CVE-2021-41242

Published on: 12/10/2021 12:00:00 AM UTC

Last Modified on: 12/14/2021 06:09:00 PM UTC

CVE-2021-41242 - advisory for GHSA-62hv-rfp4-hmrm

Source: Mitre Source: Nist Print: PDF PDF
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Certain versions of Openolat from Frentix contain the following vulnerability:

OpenOlat is a web-basedlearning management system. A path traversal vulnerability exists in OpenOlat prior to versions 15.5.12 and 16.0.5. By providing a filename that contains a relative path as a parameter in some REST methods, it is possible to create directory structures and write files anywhere on the target system. The attack could be used to write files anywhere in the web root folder or outside, depending on the configuration of the system and the properly configured permission of the application server user. The attack requires an OpenOlat user account, an enabled REST API and the rights on a business object to call the vulnerable REST calls. The problem is fixed in version 15.5.12 and 16.0.5. There is a workaround available. The vulnerability requires the REST module to be enabled. Disabling the REST module or limiting the REST module via some firewall or web-server access rules to be accessed only be trusted systems will mitigate the risk.

  • CVE-2021-41242 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo OpenOLAT - OpenOLAT version < 15.5.12
  • Affected Vendor/Software: URL Logo OpenOLAT - OpenOLAT version >= 16.0.0, < 16.0.5

CVSS3 Score: 8.1 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE HIGH HIGH

CVSS2 Score: 7.9 - HIGH

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM SINGLE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE COMPLETE COMPLETE

CVE References

Description Tags Link
Log in - OpenOlat Issue Management jira.openolat.org
text/html
URL Logo MISC jira.openolat.org/browse/OO-5819
OO-5819: container can only create file in its own path · OpenOLAT/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/OpenOLAT/OpenOLAT/commit/c450df7d7ffe6afde39ebca6da9136f1caa16ec4
OO-5819: clean starting / for backward compatibility · OpenOLAT/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/OpenOLAT/OpenOLAT/commit/336d5ce80681be61a0bbf4f73d2af5d1ff67e93a
Path Traversal in some REST methods leading to file upload to arbitrary places · Advisory · OpenOLAT/OpenOLAT · GitHub github.com
text/html
URL Logo CONFIRM github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-62hv-rfp4-hmrm

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationFrentixOpenolatAllAllAllAll
  • cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @threatmeter CVE-2021-41242 OpenOlat is a web-basedlearning management system. A path traversal vulnerability exists in OpenOlat… twitter.com/i/web/status/1… 2021-12-12 08:09:35
Reddit Logo Icon /r/netcve CVE-2021-41242 2021-12-10 23:38:14
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