// For flags

CVE-2018-3761

 

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowed handing out new tokens in case the OAuth2 client was partly compromised.

Nextcloud Server en versiones anteriores a la 12.0.8 y la 13.0.3 sufre de una autorizaciĆ³n incorrecta en el endpoint del token OAuth2. La falta de comprobaciones pudo permitir la reparticiĆ³n de nuevos tokens en caso de que el cliente OAuth2 se hubiese visto parcialmente comprometido.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-12-28 CVE Reserved
  • 2018-07-05 CVE Published
  • 2023-07-08 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-287: Improper Authentication
CAPEC
References (2)
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"
< 12.0.8
Search vendor "Nextcloud" for product "Nextcloud Server" and version " < 12.0.8"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 13.0.0 < 13.0.3
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 13.0.0 < 13.0.3"
-
Affected