CVE-2023-49089: Umbraco CMS possible path traversal when creating packages from backoffice
Impact Backoffice users with permissions to create packages can use path traversal and thereby write outside of the expected location.
Explanation of the vulnerability The “Package” section in Umbraco Backoffice allows a logged in user to write folders outside of the default package directory.
Other sources
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.0, Backoffice users with permissions to create packages can use path traversal and thereby write outside of the expected location. Versions 8.18.10, 10.8.1, and 12.3.0 contain a patch for this issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-49089?
CVE-2023-49089 has been classified as a critical severity vulnerability due to the potential for unauthorized file writes.
How do I fix CVE-2023-49089?
To fix CVE-2023-49089, upgrade Umbraco.CMS to versions 12.3.4, 10.8.1, or 8.18.10 depending on your current version.
Who is affected by CVE-2023-49089?
CVE-2023-49089 affects Umbraco CMS versions ranging from 8.0.0 to 12.3.0 where backoffice users can create packages.
What exploitation method is used in CVE-2023-49089?
CVE-2023-49089 is exploited through path traversal which allows backoffice users to write files outside the designated directories.
What should I do if I cannot update my Umbraco CMS due to CVE-2023-49089?
If unable to update, restrict permissions for backoffice users and monitor logs for unauthorized file writes as an interim measure.