Description
Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection. This issue affects Responsive Slider by MetaSlider: from n/a through 3.94.0.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-4431
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-4431 pertains to a Deserialization of Untrusted Data issue in the MetaSlider Responsive Slider plugin, which allows for Object Injection. This vulnerability is particularly severe due to its high base score of 9.8 under the CVSS 3.1 framework. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:
- Attack Vector (AV:N): Network, meaning the vulnerability can be exploited remotely.
- Attack Complexity (AC:L): Low, indicating that the attack does not require specialized conditions.
- Privileges Required (PR:N): None, meaning no privileges are needed to exploit the vulnerability.
- User Interaction (UI:N): None, indicating that no user interaction is required.
- Scope (S:U): Unchanged, meaning the vulnerability does not affect resources beyond the security scope managed by the security authority.
- Confidentiality (C:H): High impact on confidentiality.
- Integrity (I:H): High impact on integrity.
- Availability (A:H): High impact on availability.
Given these factors, the vulnerability is critical and poses a significant risk to systems using the affected plugin.
2. Potential Attack Vectors and Exploitation Methods
The primary attack vector for this vulnerability is the deserialization of untrusted data, which can lead to Object Injection. An attacker could exploit this by:
- Crafting Malicious Input: Sending specially crafted serialized data to the application.
- Remote Code Execution (RCE): If the deserialized object can be manipulated to execute arbitrary code, the attacker could gain control over the server.
- Data Exfiltration: Extracting sensitive information from the server by manipulating the deserialized objects.
- Denial of Service (DoS): Causing the application to crash or become unresponsive by injecting malicious objects.
3. Affected Systems and Software Versions
The vulnerability affects the Responsive Slider by MetaSlider plugin versions from n/a through 3.94.0. This includes all versions up to and including 3.94.0. Users of this plugin within the specified version range are at risk.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, the following steps are recommended:
- Update the Plugin: Immediately update the MetaSlider Responsive Slider plugin to a version higher than 3.94.0 if an update is available.
- Disable the Plugin: If an update is not available, consider disabling the plugin until a patched version is released.
- Input Validation: Implement strict input validation and sanitization to ensure that only trusted data is deserialized.
- Monitoring and Logging: Enhance monitoring and logging to detect any suspicious activities related to deserialization processes.
- Network Security: Implement network security measures such as firewalls and intrusion detection systems to prevent unauthorized access.
5. Impact on European Cybersecurity Landscape
The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its plugins, including MetaSlider. Organizations and individuals using the affected plugin are at risk of data breaches, unauthorized access, and service disruptions. This underscores the importance of timely patch management and continuous monitoring of third-party components.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Vulnerability Type: Deserialization of Untrusted Data leading to Object Injection.
- Affected Component: MetaSlider Responsive Slider plugin.
- Exploitation: The vulnerability can be exploited by sending malicious serialized data to the application, which is then deserialized without proper validation.
- Detection: Monitor for unusual deserialization activities and unexpected object creation within the application logs.
- Patching: Ensure that the plugin is updated to a version that addresses this vulnerability. If a patch is not available, consider implementing a custom input validation mechanism.
Conclusion
The vulnerability described in EUVD-2025-4431 is critical and requires immediate attention from organizations and individuals using the MetaSlider Responsive Slider plugin. By understanding the attack vectors, affected systems, and recommended mitigation strategies, security professionals can effectively manage the risk and protect their systems from potential exploitation.