Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Prior to 1.0.477, 1.1.12, and 1.2.12, Winter CMS allowed authenticated backend users to escalate their accounts level of access to the system by modifying the roles / permissions assigned to their account through specially crafted requests to the backend while logged in. To actively exploit this security issue, an attacker would need access to the Backend with a user account with any level of access.
This vulnerability is fixed in 1.0.477, 1.1.12, and 1.2.12.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Wintercms Winter
cpe:2.3:a:wintercms:winter:*:*:*:*:*:*:*:*
|
— |
1.0.477
|
|
Wintercms Winter
cpe:2.3:a:wintercms:winter:*:*:*:*:*:*:*:*
|
1.1.0
|
1.1.12
|
|
Wintercms Winter
cpe:2.3:a:wintercms:winter:*:*:*:*:*:*:*:*
|
1.2.0
|
1.2.12
|
References 4
https://github.com/wintercms/winter/security/advisories/GHSA-pgpf-m8m4-6cg6
security-advisories@github.com
https://wintercms.com/releases/v1.0.477
security-advisories@github.com
https://wintercms.com/releases/v1.1.12
security-advisories@github.com
https://wintercms.com/releases/v1.2.12
security-advisories@github.com