CVE-2024-26138: License information is public, exposing instance id and license holder details
First published: Wed Feb 21 2024(Updated: )
### Impact The licensor application includes the document `Licenses.Code.LicenseJSON` that provides information for admins regarding active licenses. This document is public and thus exposes this information publicly. The information includes the instance's id as well as first and last name and email of the license owner. This is a leak of information that isn't supposed to be public. The instance id allows associating data on the [active installs data](https://extensions.xwiki.org/xwiki/bin/view/Extension/Active%20Installs%202%20API/) with the concrete XWiki instance. Active installs assures that "there's no way to find who's having a given UUID" (referring to the instance id). Further, the information who the license owner is and information about the obtained licenses can be used for targeted phishing attacks. Also, while user information is normally public, email addresses might only be displayed obfuscated (depending on the configuration). ### Patches This has been fixed in Application Licensing 1.24.2, by https://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6 ### Workarounds There are no known workarounds besides upgrading. ### References Fixed by https://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/com.xwiki.licensing:application-licensing-licensor-ui | >=1.0<1.24.2 | 1.24.2 |
| XWiki Application Licensing | >=1.0<1.24.2 |
Remedy
https://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6
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Reference Links
- https://github.com/xwikisas/application-licensing/security/advisories/GHSA-4hfp-m9gv-m753
- https://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6
- https://extensions.xwiki.org/xwiki/bin/view/Extension/Active%20Installs%202%20API
- https://nvd.nist.gov/vuln/detail/CVE-2024-26138
- https://github.com/advisories/GHSA-4hfp-m9gv-m753 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-26138?
CVE-2024-26138 is classified as a high-severity vulnerability due to the exposure of sensitive instance information.
What software versions are affected by CVE-2024-26138?
CVE-2024-26138 affects XWiki application licensing versions between 1.0 and 1.24.2.
How do I fix CVE-2024-26138?
To fix CVE-2024-26138, upgrade to the latest version of the affected software that resolves the exposure issue.
What information is exposed by CVE-2024-26138?
CVE-2024-26138 exposes sensitive license details, including instance identifiers and license status, to the public.
Is there a workaround for CVE-2024-26138?
There is no documented workaround for CVE-2024-26138, and upgrading to a fixed version is recommended.
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