Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.156, 25.0.90, and 26.0.12, a vulnerability in the AbstractSettingsCollection model leads to insecure deserialization when these settings are loaded. By injecting a serialized FileCookieJar object into a setting string, an authenticated attacker can achieve Arbitrary File Write, leading directly to Remote Code Execution (RCE) on the server.
This issue has been patched in versions 6.8.156, 25.0.90, and 26.0.12.
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)
References 4
https://github.com/Intermesh/groupoffice/releases/tag/v25.0.90
security-advisories@github.com
https://github.com/Intermesh/groupoffice/releases/tag/v26.0.12
security-advisories@github.com
https://github.com/Intermesh/groupoffice/releases/tag/v6.8.156
security-advisories@github.com
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-h22j-frrf-5vxq
security-advisories@github.com