EspoCRM is an open source customer relationship management application. Prior to 9.3.7, an authenticated administrator can supply crafted serialized PHP object data that is stored in background MassAction or Export parameters and later deserialized by the application. The deserialization paths do not restrict allowed classes, allowing attacker-controlled object instantiation and arbitrary code execution on the server.
This issue is fixed in version 9.3.7.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin 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)
References 3
https://github.com/espocrm/espocrm/commit/f48d1d26ffa05eac07ef72bb7f00f67a85118…
security-advisories@github.com
https://github.com/espocrm/espocrm/releases/tag/9.3.7
security-advisories@github.com
https://github.com/espocrm/espocrm/security/advisories/GHSA-7q78-jjr9-mqcg
security-advisories@github.com