CVE-2012-5626
📋 TL;DR
This vulnerability in multiple Red Hat JBoss products allows attackers to bypass role-based access controls. When an EJB method uses the @RunAs annotation to specify execution roles, the system ignores these restrictions, potentially allowing unauthorized users to execute privileged operations. Affected systems include Red Hat JBoss BRMS, Enterprise Application Platform, Operations Network, Portal, SOA Platform, and Enterprise Web Server.
💻 Affected Systems
- Red Hat JBoss BRMS
- Red Hat JBoss Enterprise Application Platform
- Red Hat JBoss Operations Network
- Red Hat JBoss Portal
- Red Hat JBoss SOA Platform
- Red Hat JBoss Enterprise Web Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the application server with unauthorized execution of administrative functions, data manipulation, or privilege escalation to system-level access.
Likely Case
Unauthorized access to business logic functions, data exposure, or manipulation of application data based on the specific EJB methods affected.
If Mitigated
Limited impact if proper network segmentation, authentication layers, and additional authorization checks are implemented outside the vulnerable components.
🎯 Exploit Status
Exploitation requires knowledge of vulnerable EJB endpoints and understanding of application-specific @RunAs usage. Attackers need some level of access to the application.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Red Hat Security Advisories for specific product updates
Vendor Advisory: https://access.redhat.com/security/cve/cve-2012-5626
Restart Required: Yes
Instructions:
1. Apply Red Hat security updates for affected products. 2. Restart JBoss application servers. 3. Verify @RunAs annotations are properly enforced.
🔧 Temporary Workarounds
Disable or modify @RunAs usage
allTemporarily remove or modify @RunAs annotations in vulnerable EJB methods until patches can be applied
# Requires application code modification
# Review and edit EJB source files with @RunAs annotations
Implement additional authorization checks
allAdd programmatic security checks within EJB methods to verify user roles
# Example Java code:
if (!ctx.isCallerInRole("requiredRole")) {
throw new SecurityException("Access denied");
}
🧯 If You Can't Patch
- Implement network segmentation to isolate affected JBoss instances from untrusted networks
- Deploy web application firewall (WAF) with custom rules to detect and block unauthorized EJB method invocations
🔍 How to Verify
Check if Vulnerable:
Review application code for @RunAs annotations in EJB methods and test if role restrictions are properly enforcedCheck Version:
# For JBoss EAP: cat $JBOSS_HOME/version.txt
# Check Red Hat package versions: rpm -qa | grep -i jbossVerify Fix Applied:
After patching, test that @RunAs annotations now properly restrict method execution based on specified roles📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to EJB methods
- Security exceptions related to role validation failures
- Unexpected successful invocations of @RunAs annotated methods
Network Indicators:
- Unusual patterns of EJB/RMI traffic to protected methods
- Requests bypassing expected authentication flows
SIEM Query:
source="jboss.log" AND ("Access denied" OR "SecurityException" OR "@RunAs")