Vulnerability Details : CVE-2021-39224
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 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 OfficeOnline application is upgraded to 1.1.1. As a workaround, one may disable the OfficeOnline application in the app settings.
Vulnerability category: Information leak
Products affected by CVE-2021-39224
- cpe:2.3:a:nextcloud:officeonline:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-39224
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-39224
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST | |
|
3.5
|
LOW | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N |
2.1
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-39224
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2021-39224
-
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-56wm-r6jm-3v9h
File path disclosure of shared files in OfficeOnline application · Advisory · nextcloud/security-advisories · GitHubThird Party Advisory
-
https://github.com/nextcloud/officeonline/pull/204
Unify error messages accross controllers by juliushaertl · Pull Request #204 · nextcloud/officeonline · GitHubPatch;Third Party Advisory
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