Description
In WS-Inc J WBEM Server 4.7.4 before 4.7.5, the CIM-XML protocol adapter does not disable entity resolution. This allows context-dependent attackers to read arbitrary files or cause a denial of service, a similar issue to CVE-2013-4152.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2023-41267
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2023-41267 affects the WS-Inc J WBEM Server version 4.7.4 and earlier. The CIM-XML protocol adapter in these versions does not disable entity resolution, which can lead to arbitrary file reading or denial of service (DoS) attacks. This vulnerability is similar to CVE-2013-4152, indicating a recurring issue in the software.
Severity Evaluation:
- Base Score: 9.1 (CVSS v3.1)
- Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
The high base score of 9.1 indicates a critical vulnerability. The attack vector (AV:N) is network-based, requiring no user interaction (UI:N) or privileges (PR:N). The complexity is low (AC:L), and the impact on confidentiality (C:H) and availability (A:H) is high, while integrity (I:N) is not affected.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Network-Based Attacks: Given the network-based attack vector (AV:N), attackers can exploit this vulnerability remotely.
- Context-Dependent Attacks: The vulnerability allows context-dependent attackers to exploit the system, meaning the attacker needs specific conditions or context to successfully exploit the vulnerability.
Exploitation Methods:
- Arbitrary File Reading: Attackers can read arbitrary files on the system by exploiting the lack of entity resolution disabling.
- Denial of Service (DoS): Attackers can cause a DoS condition, potentially crashing the server or making it unavailable.
3. Affected Systems and Software Versions
Affected Systems:
- WS-Inc J WBEM Server versions 4.7.4 and earlier.
Unaffected Systems:
- WS-Inc J WBEM Server version 4.7.5 and later.
4. Recommended Mitigation Strategies
Immediate Actions:
- Upgrade: Upgrade to WS-Inc J WBEM Server version 4.7.5 or later, which includes the fix for this vulnerability.
- Patch Management: Ensure that all systems are regularly updated and patched to mitigate known vulnerabilities.
Long-Term Strategies:
- Network Segmentation: Implement network segmentation to limit the exposure of vulnerable systems.
- Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activities and potential exploitation attempts.
- Access Controls: Enforce strict access controls to limit unauthorized access to critical systems.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to organizations using the affected WS-Inc J WBEM Server versions. Given the critical nature of the vulnerability, it could lead to data breaches, service disruptions, and potential financial losses. European organizations, particularly those in critical infrastructure sectors, should prioritize addressing this vulnerability to maintain the integrity and availability of their systems.
6. Technical Details for Security Professionals
Vulnerability Details:
- CIM-XML Protocol Adapter: The issue lies within the CIM-XML protocol adapter, which does not disable entity resolution. This allows attackers to craft malicious XML inputs that can read arbitrary files or cause a DoS condition.
- Similarity to CVE-2013-4152: The vulnerability is similar to CVE-2013-4152, indicating a recurring issue in the software's handling of XML entity resolution.
Detection and Monitoring:
- Log Analysis: Monitor server logs for unusual XML parsing errors or unexpected file access attempts.
- Anomaly Detection: Implement anomaly detection mechanisms to identify deviations from normal behavior that could indicate an exploitation attempt.
References:
Aliases:
- CVE-2023-37364
- GSD-2023-37364
Assigner:
- Mitre
EPSS:
- N/A
ENISA ID:
- Product: n/a
- Vendor: n/a
Conclusion
EUVD-2023-41267 represents a critical vulnerability in WS-Inc J WBEM Server versions 4.7.4 and earlier. Organizations should prioritize upgrading to version 4.7.5 or later and implement robust security measures to mitigate the risk of exploitation. The European cybersecurity landscape must remain vigilant against such vulnerabilities to protect against potential data breaches and service disruptions.