Vulnerabilities > CVE-2023-26436 - Deserialization of Untrusted Data vulnerability in Open-Xchange Appsuite Backend

047910
CVSS 8.8 - HIGH
Attack vector
ADJACENT_NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
low complexity
open-xchange
CWE-502

Summary

Attackers with access to the "documentconverterws" API were able to inject serialized Java objects, that were not properly checked during deserialization. Access to this API endpoint is restricted to local networks by default. Arbitrary code could be injected that is being executed when processing the request. A check has been introduced to restrict processing of legal and expected classes for this API. We now log a warning in case there are attempts to inject illegal classes. No publicly available exploits are known.

Common Weakness Enumeration (CWE)