CVE-2023-28847
Nextcloud Server missing brute force protection for passwords of password protected share links
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. In Nextcloud Server 24.0.0 prior to 24.0.11 and 25.0.0 prior to 25.0.5; as well as Nextcloud Server Enterprise 23.0.0 prior to 23.0.12.6, 24.0.0 prior to 24.0.11, and 25.0.0 prior to 25.0.5; an attacker is not restricted in verifying passwords of share links so they can just start brute forcing the password. Nextcloud Server 24.0.11 and 25.0.5 and Nextcloud Enterprise Server 23.0.12.6, 24.0.11, and 25.0.5 contain a fix for this issue. No known workarounds are available.
*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
- 2023-04-25 CVE Published
- 2024-08-02 CVE Updated
- 2024-08-02 First Exploit
- 2024-11-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-307: Improper Restriction of Excessive Authentication Attempts
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://hackerone.com/reports/1894653 | 2024-08-02 |
| URL | Date | SRC |
|---|---|---|
| https://github.com/nextcloud/server/pull/35057 | 2023-05-04 |
| URL | Date | SRC |
|---|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w | 2023-05-04 |
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 < 23.0.12.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.12.6" | enterprise |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 24.0.0 < 24.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.11" | - |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 24.0.0 < 24.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.11" | enterprise |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 25.0.0 < 25.0.5 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.5" | - |
Affected
| ||||||
| Nextcloud Search vendor "Nextcloud" | Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server" | >= 25.0.0 < 25.0.5 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.5" | enterprise |
Affected
| ||||||