CVE-2022-0749 in SinGooCMS.Utility
Summary
by MITRE • 03/17/2022
This affects all versions of package SinGooCMS.Utility. The socket client in the package can pass in the payload via the user-controllable input after it has been established, because this socket client transmission does not have the appropriate restrictions or type bindings for the BinaryFormatter.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/20/2022
The vulnerability identified as CVE-2022-0749 represents a critical security flaw within the SinGooCMS.Utility package that affects all versions of this software component. This issue stems from improper input validation and type binding mechanisms within the socket client implementation, creating a pathway for arbitrary code execution through malicious payload injection. The vulnerability specifically targets the BinaryFormatter serialization mechanism, which lacks adequate restrictions to prevent dangerous deserialization operations.
The technical flaw manifests when the socket client processes user-controllable input after a connection has been established. This occurs because the BinaryFormatter component does not enforce appropriate type restrictions or validation checks during the deserialization process. Attackers can exploit this weakness by crafting malicious payloads that, when processed by the vulnerable socket client, trigger unintended code execution on the target system. The absence of input sanitization and type binding creates an environment where untrusted data can be interpreted as executable code, fundamentally compromising the application's security posture.
From an operational impact perspective, this vulnerability exposes systems running affected versions of SinGooCMS.Utility to significant risks including remote code execution, privilege escalation, and potential system compromise. The vulnerability's exploitation requires minimal prerequisites since it operates through established network connections, making it particularly dangerous in environments where network services are exposed to untrusted users. Organizations utilizing this package may experience complete system takeover, data exfiltration, and persistent backdoor installation by adversaries who exploit this flaw. The vulnerability's impact extends beyond immediate system compromise to include potential lateral movement within networks and escalation of privileges across multiple system components.
Mitigation strategies for CVE-2022-0749 should prioritize immediate remediation through package updates to versions that address the BinaryFormatter deserialization issues. Organizations must implement strict input validation and sanitization measures at all network entry points, particularly for socket client implementations. The use of alternative serialization mechanisms such as JSON or XML instead of BinaryFormatter should be considered to eliminate the inherent risks associated with binary deserialization. Network segmentation and access controls should be enforced to limit exposure of vulnerable components to untrusted networks. Additionally, implementing runtime monitoring and anomaly detection systems can help identify potential exploitation attempts. This vulnerability aligns with CWE-502 which specifically addresses deserialization of untrusted data, and maps to ATT&CK technique T1059.007 for remote code execution through network services. Organizations should also consider implementing application whitelisting policies and regular security assessments to prevent similar vulnerabilities from emerging in other components of their software stack.