CVE-2023-28083: HP Integrated Lights-Out 4 XSS Vulnerability

CVE-2023-28083 Overview

A remote Cross-site Scripting (XSS) vulnerability has been discovered in HPE Integrated Lights-Out (iLO) management interfaces, affecting iLO 4, iLO 5, and iLO 6 versions. This vulnerability allows remote attackers with low privileges to inject malicious scripts into the iLO web interface, potentially compromising the security of server management operations.

HPE Integrated Lights-Out is an essential out-of-band management technology embedded in HPE ProLiant and Synergy servers, providing administrators with remote server monitoring, configuration, and management capabilities. The XSS vulnerability in these interfaces poses significant risks to enterprise data center environments where iLO is widely deployed for critical infrastructure management.

Critical Impact

Successful exploitation could allow attackers to steal administrative session cookies, perform unauthorized actions in the iLO interface, or redirect administrators to malicious sites, potentially compromising server management operations across the enterprise infrastructure.

Affected Products

• HP Integrated Lights-Out 4 (iLO 4)
• HP Integrated Lights-Out 5 (iLO 5)
• HP Integrated Lights-Out 6 (iLO 6)
• HPE ProLiant DL Series Servers (Gen8, Gen9, Gen10, Gen10 Plus, Gen11)
• HPE ProLiant ML Series Servers (Gen8, Gen9, Gen10, Gen10 Plus, Gen11)
• HPE ProLiant BL Series Server Blades (Gen8, Gen9, Gen10)
• HPE Apollo Systems (Gen9, Gen10, Gen10 Plus)
• HPE Synergy Compute Modules (Gen9, Gen10, Gen10 Plus)
• HPE StoreEasy Storage Systems (1400, 1500, 1600, 1800, 3800 series)
• HPE Edgeline Server Blades

Discovery Timeline

• 2023-03-22 - CVE-2023-28083 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2023-28083

Vulnerability Analysis

This Cross-Site Scripting vulnerability exists within the HPE Integrated Lights-Out web management interface. The vulnerability allows a remote attacker with low-level privileges and user interaction to inject and execute arbitrary JavaScript code within the context of a victim's browser session.

The attack requires user interaction, meaning an administrator must be tricked into clicking a malicious link or visiting a compromised page that targets the iLO interface. Once triggered, the injected script executes with the same privileges as the authenticated administrator, potentially allowing the attacker to perform actions such as modifying server configurations, accessing sensitive server health data, or hijacking the administrative session entirely.

The scope of this vulnerability extends beyond the vulnerable component (Changed scope), meaning successful exploitation can impact resources managed through the iLO interface, including the underlying physical server systems.

Root Cause

The root cause of CVE-2023-28083 is improper input validation and output encoding in the iLO web interface (CWE-79: Improper Neutralization of Input During Web Page Generation). User-supplied data is not properly sanitized before being reflected or stored in web pages served by the iLO management interface, allowing malicious script injection.

When user input containing JavaScript code is processed by the vulnerable iLO interface without proper sanitization, the malicious script is rendered in the browser of any user who views the affected page, leading to arbitrary script execution.

Attack Vector

The attack is network-based, requiring the attacker to have network access to the iLO management interface. The exploitation flow involves:

1. Attacker crafts a malicious URL or payload containing JavaScript code targeting the vulnerable iLO endpoint
2. Attacker delivers the malicious link to an administrator through phishing, social engineering, or by embedding it in a webpage
3. When the administrator interacts with the malicious content while authenticated to iLO, the JavaScript executes
4. The attacker can then steal session tokens, modify interface content, or perform administrative actions on behalf of the victim

The vulnerability requires low privileges on the system and user interaction for successful exploitation. Typical XSS payloads targeting management interfaces might attempt to exfiltrate session cookies, redirect users to attacker-controlled servers, or inject keyloggers to capture credentials.

Detection Methods for CVE-2023-28083

Indicators of Compromise

• Unusual JavaScript code or encoded payloads in iLO web interface URLs or form submissions
• Suspicious HTTP requests to iLO management ports (typically 443) containing <script> tags or event handlers like onerror, onload, or onclick
• iLO session activity from unexpected IP addresses or at unusual times following suspicious link clicks
• Unexpected administrative changes to server configurations without corresponding administrator actions

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block common XSS payloads targeting iLO management interfaces
• Monitor and log all HTTP traffic to iLO interfaces for malicious script patterns and encoded JavaScript
• Enable comprehensive audit logging within iLO and integrate with SIEM solutions for anomaly detection
• Deploy browser-based XSS protection and Content Security Policy headers where possible

Monitoring Recommendations

• Configure alerts for unusual authentication patterns or session behavior on iLO management interfaces
• Monitor network traffic for suspicious outbound connections from management network segments
• Implement regular security scanning of iLO interfaces to identify unpatched instances
• Review iLO audit logs periodically for signs of unauthorized configuration changes or access attempts

How to Mitigate CVE-2023-28083

Immediate Actions Required

• Apply the latest firmware updates from HPE for all affected iLO versions immediately
• Restrict network access to iLO management interfaces using network segmentation and firewall rules
• Implement strong authentication mechanisms including multi-factor authentication for iLO access
• Educate administrators about phishing risks and suspicious links targeting management interfaces
• Enable iLO security features such as login security banners and session timeout policies

Patch Information

HPE has released software updates to resolve this vulnerability in HPE Integrated Lights-Out. Administrators should download and apply the appropriate firmware updates for their iLO version from the HPE Security Advisory.

The security advisory provides detailed instructions for updating iLO 4, iLO 5, and iLO 6 firmware to patched versions. Organizations should prioritize updates based on the criticality of the managed servers and the exposure of iLO interfaces to untrusted networks.

Workarounds

• Isolate iLO management interfaces on dedicated management VLANs with strict access controls
• Implement proxy or jump host requirements for accessing iLO interfaces to add additional authentication layers
• Disable unnecessary iLO features and services to reduce the attack surface
• Configure browser security settings to enhance XSS protection when accessing management interfaces

# Example: Restrict iLO access using firewall rules (Linux iptables)
# Allow iLO access only from trusted management network
iptables -A OUTPUT -p tcp --dport 443 -d <ilo_network_range> -s <management_host> -j ACCEPT
iptables -A OUTPUT -p tcp --dport 443 -d <ilo_network_range> -j DROP

# Verify iLO firmware version via REST API (requires authentication)
curl -k -u admin:password https://<ilo_ip>/redfish/v1/Managers/1/ | grep -i firmwareversion