CVE-2025-23368

8.1 HIGH

📋 TL;DR

This vulnerability in WildFly Elytron integration allows attackers to perform brute force attacks against CLI authentication due to insufficient rate limiting. Systems using WildFly with Elytron authentication are affected, potentially leading to unauthorized access.

💻 Affected Systems

Products:
  • WildFly Application Server
Versions: Specific versions not detailed in provided references; check Red Hat advisory for exact affected versions
Operating Systems: All platforms running WildFly
Default Config Vulnerable: ⚠️ Yes
Notes: Affects systems using WildFly Elytron authentication for CLI access. The vulnerability exists in the rate limiting implementation.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise via successful brute force leading to administrative access and potential data exfiltration or service disruption.

🟠

Likely Case

Unauthorized access to CLI functionality, allowing configuration changes or data access depending on compromised account privileges.

🟢

If Mitigated

Limited impact with proper network segmentation and monitoring, though authentication attempts may still be logged.

🌐 Internet-Facing: HIGH - Directly exposed CLI interfaces can be targeted by automated brute force tools from anywhere on the internet.
🏢 Internal Only: MEDIUM - Internal attackers or compromised internal systems could still exploit this, but requires network access to CLI endpoints.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires access to CLI authentication endpoint and uses standard brute force techniques. No authentication bypass - attackers must guess valid credentials.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Red Hat advisory for specific patched versions

Vendor Advisory: https://access.redhat.com/security/cve/CVE-2025-23368

Restart Required: Yes

Instructions:

1. Check current WildFly version
2. Apply latest security updates from Red Hat repositories
3. Restart WildFly service
4. Verify patch application

🔧 Temporary Workarounds

Implement Network-Level Rate Limiting

linux

Use firewall or load balancer to limit authentication attempts per IP

# Example using iptables for rate limiting
iptables -A INPUT -p tcp --dport 9990 -m state --state NEW -m recent --set
iptables -A INPUT -p tcp --dport 9990 -m state --state NEW -m recent --update --seconds 60 --hitcount 10 -j DROP

Restrict CLI Access

all

Limit CLI interface access to trusted networks only

# Configure WildFly to bind CLI to specific interface
/interface=management:write-attribute(name=inet-address,value=${jboss.bind.address.management:127.0.0.1})

🧯 If You Can't Patch

  • Implement strong password policies and account lockout mechanisms
  • Monitor authentication logs for brute force patterns and implement alerting

🔍 How to Verify

Check if Vulnerable:

Check WildFly version and review authentication configuration for rate limiting settings

Check Version:

$WILDFLY_HOME/bin/standalone.sh --version

Verify Fix Applied:

Verify updated version and test authentication rate limiting functionality

📡 Detection & Monitoring

Log Indicators:

  • Multiple failed authentication attempts from same source IP
  • Rapid succession of authentication failures in CLI logs

Network Indicators:

  • High volume of authentication requests to CLI port (default 9990)
  • Pattern of failed login attempts from single IP

SIEM Query:

source="wildfly.log" AND "authentication failure" | stats count by src_ip | where count > 10

🔗 References

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