CVE-2023-28833
Unrestricted filenames for logo or favicon as admin in the theming settings in nextcloud server
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Nextcloud server is an open source home cloud implementation. In affected versions admins of a server were able to upload a logo or a favicon and to provided a file name which was not restricted and could overwrite files in the appdata directory. Administrators may have access to overwrite these files by other means but this method could be exploited by tricking an admin into uploading a maliciously named file. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should avoid ingesting logo files from untrusted sources.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-03-24 CVE Reserved
- 2023-03-30 CVE Published
- 2024-08-02 CVE Updated
- 2024-09-09 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-434: Unrestricted Upload of File with Dangerous Type
CAPEC
References (2)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/nextcloud/server/pull/36095 | 2023-04-07 |
| URL | Date | SRC |
|---|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ch7f-px7m-hg25 | 2023-04-07 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 23.0.0 < 23.0.14 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.14" | enterprise |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 24.0.0 < 24.0.10 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.10" | - |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 24.0.0 < 24.0.10 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.10" | enterprise |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 25.0.0 < 25.0.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.4" | - |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 25.0.0 < 25.0.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.4" | enterprise |
Affected
| ||||||