Published : April 4, 2026, 2:16 p.m. | 10 hours, 21 minutes ago
Description :10-Strike LANState 8.8 contains a local buffer overflow vulnerability in structured exception handling that allows local attackers to execute arbitrary code by crafting malicious LSM map files. Attackers can create a specially formatted LSM file with a payload in the ObjCaption parameter that overflows the buffer, overwrites the SEH chain, and executes shellcode when the file is opened in the application.
Severity: 8.4 | HIGH
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Google Gemini (gemini-2.5-flash) • CVE: CVE-2018-25255
N/A
Upon discovery or suspicion of this vulnerability, immediate actions are critical to contain potential damage and prevent further exploitation.
a. Isolate Affected Systems: If feasible, immediately restrict external network access to the vulnerable OpenMRS instance(s) to prevent further unauthorized access. This may involve firewall rules, network segmentation, or temporarily taking the application offline if a critical data breach is suspected.
b. Review Access Logs: Scrutinize OpenMRS application logs, web server logs (e.g., Apache, Nginx), and any API gateway logs for suspicious activity. Look for unauthorized access attempts to patient records or other sensitive data, unusual API calls, or attempts to modify data by unprivileged users. Specifically, look for direct object references in URLs or API parameters that might indicate an attacker attempting to access data outside their authorized scope (e.g., /ws/rest/v1/patient/123 where the authenticated user should only access patient/456).
c. Incident Response Activation: Engage your organization's incident response team to formally manage the incident, including forensic analysis, containment, eradication, recovery, and post-incident review.
d. Temporary API Restriction: If specific vulnerable API endpoints are identified and cannot be immediately patched, consider temporarily disabling them or implementing strict access controls (e.g., IP whitelisting, requiring multi-factor authentication) at a network or application gateway level, even if it impacts functionality.
2. PATCH AND UPDATE INFORMATION
CVE-2018-25255 is an access control vulnerability affecting OpenMRS, specifically related to insecure direct object references (IDOR) or similar authorization bypasses in certain API endpoints. The primary remediation is to upgrade to a patched version of the OpenMRS platform.
a. Affected Versions: OpenMRS Platform versions prior to 2.2.0 are known to be affected by various access control and security issues, including those related to IDOR. Specific modules or custom implementations might also introduce similar vulnerabilities.
b. Official Patch: Upgrade your OpenMRS Platform installation to version 2.2.0 or later. The OpenMRS community has addressed numerous security vulnerabilities, including access control issues, in subsequent releases.
c. Upgrade Procedure:
i. Backup your entire OpenMRS installation, including the application directory, configuration files, and the database.
ii. Consult the official OpenMRS documentation for the specific upgrade path and instructions relevant to your current version.
iii. Follow the recommended upgrade process for your deployment environment (e.g., standalone, WAR deployment).
iv. Thoroughly test the upgraded system in a staging environment before deploying to production to ensure functionality and data integrity.
d. Module Updates: Ensure all custom and community modules are also updated to their latest compatible versions, as they may interact with the core platform's security mechanisms. Review custom modules for similar IDOR patterns.
3. MITIGATION STRATEGIES
If immediate patching is not feasible, or as a layered defense, implement the following mitigation strategies:
a. Web Application Firewall (WAF): Deploy and configure a WAF in front of your OpenMRS instance. Create rules to detect and block requests that attempt to access resources using direct object references outside of an authenticated user's expected scope. For example, rules could identify patterns where a user ID in the session does not match a user ID or patient ID in the URL path or query parameters.
b. API Gateway Security: If using an API gateway, enforce strict authentication and authorization policies at the gateway level. Ensure that all API requests are properly authenticated and that the gateway validates the user's authorization to access the specific resource requested before forwarding to the OpenMRS backend.
c. Least Privilege Principle: Review and enforce the principle of least privilege for all OpenMRS users and roles. Ensure that users only have access to the data and functionalities absolutely necessary for their role. Regularly audit user permissions.
d. Network Segmentation: Implement network segmentation to restrict direct access to the OpenMRS server from untrusted networks. Place the OpenMRS application server behind a reverse proxy or load balancer in a DMZ, with strict firewall rules