CVE-2025-49455 in TinySalt Plugin
Summary
by MITRE • 06/10/2025
Deserialization of Untrusted Data vulnerability in LoftOcean TinySalt allows Object Injection.This issue affects TinySalt: from n/a before 3.10.0.
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Analysis
by VulDB Data Team • 06/10/2025
The vulnerability identified as CVE-2025-49455 represents a critical deserialization flaw within the LoftOcean TinySalt application that enables remote attackers to inject malicious objects during the deserialization process. This vulnerability falls under the category of insecure deserialization as defined by CWE-502, where untrusted data is processed through deserialization mechanisms without proper validation or sanitization. The flaw specifically impacts versions of TinySalt prior to 3.10.0, indicating that the developers have acknowledged and addressed this security gap in their subsequent releases.
The technical implementation of this vulnerability stems from the application's failure to properly validate input data before attempting to deserialize objects from untrusted sources. When TinySalt processes serialized data, it does not perform adequate checks to ensure that the incoming data conforms to expected object types or structures. This lack of input validation creates an opportunity for attackers to craft malicious serialized objects that, when processed by the application, can execute arbitrary code or manipulate the application's behavior. The vulnerability is particularly dangerous because it can be exploited remotely without requiring authentication, making it an attractive target for automated exploitation tools.
The operational impact of this vulnerability extends beyond simple code execution, as it can lead to complete system compromise and data breaches. Attackers can leverage this vulnerability to gain unauthorized access to the affected system, potentially escalating privileges and establishing persistent backdoors. The deserialization attack vector aligns with techniques documented in the MITRE ATT&CK framework under the T1203 category for exploitation for privilege escalation. Additionally, the vulnerability could enable attackers to perform data manipulation, information disclosure, or denial of service attacks against the targeted environment. Organizations running affected versions of TinySalt face significant risk of unauthorized access and potential data compromise, particularly in environments where the application processes user-supplied data.
Security mitigations for this vulnerability should focus on implementing proper input validation and sanitization measures before any deserialization operations occur. Organizations should immediately upgrade to TinySalt version 3.10.0 or later, which contains the necessary patches to address this vulnerability. Additional protective measures include implementing strict object type checking, using secure deserialization libraries that prevent dangerous object reconstruction, and employing application firewalls or intrusion detection systems to monitor for suspicious deserialization patterns. The remediation approach should follow the principle of least privilege and implement proper data validation at multiple layers of the application architecture, aligning with security best practices outlined in the OWASP Top Ten and NIST cybersecurity frameworks. Organizations should also conduct thorough security testing to identify any other potential deserialization vulnerabilities within their application ecosystem and establish monitoring procedures to detect anomalous deserialization activities.