Vulnerability · Published Oct 25, 2021 · Assigned by GitHub_M
CVE-2021-39223File path disclosure of shared files in Richdocuments application
Medium 4.8
In plain English
A medium-severity information exposure in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).
Official description
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Richdocuments application prior to versions 3.8.6 and 4.2.3 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file `shared.txt` is located within `/files/$username/Myfolder/Mysubfolder/shared.txt`). It is recommended that the Richdocuments application is upgraded to 3.8.6 or 4.2.3. As a workaround, disable the Richdocuments application in the app settings.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | < 3.8.6,>= 4.0.0, < 4.2.3 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93 x_refsource_CONFIRM
- https://github.com/nextcloud/richdocuments/pull/1760 x_refsource_MISC
- https://hackerone.com/reports/1253460 x_refsource_MISC