CVE-2024-28987: SolarWinds Web Help Desk Auth Bypass

CVE-2024-28987 Overview

CVE-2024-28987 is a critical hardcoded credential vulnerability affecting SolarWinds Web Help Desk (WHD) software. This vulnerability allows remote unauthenticated attackers to access internal functionality and modify data within the help desk system. The presence of hardcoded credentials in the application represents a severe security flaw that bypasses authentication mechanisms entirely, granting unauthorized users the ability to interact with sensitive system functions.

Web Help Desk is a widely deployed IT service management solution used by organizations to manage support tickets, IT assets, and service requests. The exploitation of this vulnerability could lead to unauthorized access to sensitive help desk data, modification of ticket information, and potential lateral movement within affected networks.

Critical Impact

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. Remote unauthenticated attackers can leverage hardcoded credentials to access internal functionality and modify data without any authentication.

Affected Products

• SolarWinds Web Help Desk versions prior to 12.8.3 Hotfix 2
• SolarWinds Web Help Desk 12.8.3 (base version)
• SolarWinds Web Help Desk 12.8.3 Hotfix 1

Discovery Timeline

• 2024-08-21 - CVE-2024-28987 published to NVD
• 2025-10-27 - Last updated in NVD database

Technical Details for CVE-2024-28987

Vulnerability Analysis

This vulnerability is classified as CWE-798 (Use of Hard-coded Credentials), a critical security weakness where sensitive authentication credentials are embedded directly within the application's source code or configuration files. In the case of SolarWinds Web Help Desk, these hardcoded credentials provide a backdoor that allows any remote attacker with network access to the application to authenticate and gain access to internal functionality.

The vulnerability enables unauthenticated access over the network with no user interaction required. Successful exploitation results in significant impact to both confidentiality and integrity, as attackers can read sensitive data and modify information within the system. Organizations using affected versions are at risk of unauthorized data access, ticket manipulation, and potential compromise of sensitive IT support information.

Root Cause

The root cause of this vulnerability is the inclusion of hardcoded credentials within the SolarWinds Web Help Desk application. This represents a fundamental security anti-pattern where authentication secrets are embedded in the codebase rather than being securely generated and stored during deployment. These credentials persist across all installations of the affected versions, meaning any attacker who discovers them can potentially access any vulnerable WHD instance.

Hardcoded credentials are particularly dangerous because they cannot be changed without modifying the application code, they are often identical across all deployments, and they may be discovered through reverse engineering, code analysis, or information disclosure.

Attack Vector

The attack vector for CVE-2024-28987 is network-based, requiring no privileges or user interaction to exploit. An attacker with network access to a vulnerable SolarWinds Web Help Desk instance can leverage the hardcoded credentials to:

1. Authenticate to the WHD application without valid user credentials
2. Access internal functionality normally restricted to authenticated users
3. Read sensitive help desk data including tickets, user information, and IT asset details
4. Modify existing data within the system, potentially disrupting IT operations or covering tracks

The vulnerability is particularly concerning for internet-facing WHD installations, though internal deployments are also at risk from insider threats or attackers who have gained network access through other means. For detailed technical information, refer to the SolarWinds Security Advisory.

Detection Methods for CVE-2024-28987

Indicators of Compromise

• Unexpected authentication events or sessions in Web Help Desk logs that cannot be attributed to legitimate users
• Unauthorized modifications to help desk tickets, user accounts, or system configurations
• Unusual API calls or access patterns to internal WHD functionality
• Authentication attempts or successful logins from unfamiliar IP addresses or geographic locations

Detection Strategies

• Review Web Help Desk access logs for authentication events using the hardcoded credentials or internal service accounts
• Monitor for unauthorized data modifications or unusual patterns of ticket access
• Implement network traffic analysis to detect connections to WHD from unauthorized sources
• Deploy endpoint detection and response (EDR) solutions to monitor for suspicious activity on WHD servers

Monitoring Recommendations

• Enable comprehensive logging on all Web Help Desk instances and forward logs to a SIEM solution
• Configure alerts for authentication anomalies and unauthorized access attempts
• Implement network segmentation monitoring to detect lateral movement from compromised WHD servers
• Establish baseline behavior patterns for WHD usage to identify deviations that may indicate exploitation

How to Mitigate CVE-2024-28987

Immediate Actions Required

• Immediately apply SolarWinds Web Help Desk 12.8.3 Hotfix 2 to all affected installations
• Audit Web Help Desk logs for any indicators of past exploitation
• Review all data within WHD for unauthorized modifications, particularly if the system was internet-accessible
• Reset credentials for all WHD user accounts as a precautionary measure

Patch Information

SolarWinds has released a hotfix to address this vulnerability. Organizations should upgrade to Web Help Desk 12.8.3 Hotfix 2 or later to remediate the hardcoded credential issue. The patch is available through the SolarWinds Support Portal. Given the active exploitation of this vulnerability as noted in the CISA KEV catalog, patching should be treated as an urgent priority.

Workarounds

• Restrict network access to Web Help Desk to trusted internal networks only if patching cannot be performed immediately
• Implement web application firewall (WAF) rules to monitor and restrict access to WHD endpoints
• Consider temporarily taking the WHD system offline if it is internet-facing and cannot be immediately patched
• Implement additional authentication layers such as VPN requirements for accessing the WHD application

# Network access restriction example using iptables
# Restrict WHD access to internal network only (adjust IP ranges as needed)
iptables -A INPUT -p tcp --dport 8443 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 8443 -s 192.168.0.0/16 -j ACCEPT
iptables -A INPUT -p tcp --dport 8443 -j DROP