Adobe Acrobat and Reader util.printf Stack-Based Buffer Overflow (CVE-2008-2992)
Executive & SecOps Summary
SECOPS ASSESSMENTAdobe Acrobat and Reader 8.1.2 and earlier
Remote attackers can execute arbitrary code on the target system via a crafted PDF file
Upgrade to the latest patched version or disable JavaScript execution within PDF documents
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
The primary remediation is upgrading to Adobe Acrobat/Reader 8.1.3 or later. In enterprise environments, administrators can deploy the patch silently using the following command:
# Silent installation of the Adobe Acrobat update patch via command line
msiexec.exe /p 'AcrobatUpd813_all_incr.msp' /qn /norestart2. Temporary Workaround & Hardening Configuration
If patching cannot be applied immediately, disable JavaScript in Adobe Reader via the registry to mitigate the attack vector.
# Disable Adobe Reader JavaScript execution via PowerShell registry modification
$regPath = 'HKCU:\Software\Adobe\Acrobat Reader\8.0\JSPrefs'
if (-not (Test-Path $regPath)) {
New-Item -Path $regPath -Force | Out-Null
}
Set-ItemProperty -Path $regPath -Name 'bEnableJS' -Value 0 -Type DWord3. Log Audit & IoC Verification Commands
Use the following PowerShell script to audit endpoints and identify if any vulnerable versions of Adobe Reader are currently installed.
# Audit script to detect vulnerable Adobe Reader installations
$apps = Get-ItemProperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' |
Where-Object { $_.DisplayName -like '*Adobe Reader*' }
foreach ($app in $apps) {
Write-Output "Detected: $($app.DisplayName) [Version: $($app.DisplayVersion)]"
if ([Version]$app.DisplayVersion -le [Version]'8.1.2') {
Write-Error "VULNERABLE: Version $($app.DisplayVersion) is susceptible to CVE-2008-2992. Action required."
} else {
Write-Output "SECURE: Version $($app.DisplayVersion) is not vulnerable."
}
}Block Kernel Privilege Escalation & Ransomware Payloads Before You Can Reboot
Protect unpatched Windows, Linux, and macOS workloads against in-memory exploitation and lateral movement with autonomous EDR.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
A stack-based buffer overflow vulnerability (CWE-787) exists in Adobe Acrobat and Reader's JavaScript engine. The root cause lies in the improper validation of input string lengths when processing the format string argument of the util.printf JavaScript function, leading to a stack buffer overflow.
2. Exploitation Mechanics & Attack Scenario
An attacker crafts a malicious PDF document containing embedded JavaScript that calls the util.printf function with an oversized, specially crafted format string. When a user opens the PDF, the JavaScript engine executes the code, overwriting the stack's return address. This redirects the execution flow to the attacker's shellcode, resulting in arbitrary code execution under the context of the current user.
3. Infrastructure & Business Impact
This vulnerability is listed in the CISA KEV and carries an extremely high EPSS score of 0.9979, indicating widespread historical exploitation. Successful exploitation allows complete compromise of the user's workstation, which can serve as an entry point for lateral movement within the corporate network, leading to data exfiltration or ransomware deployment.
Official Vendor Advisories & References
Stack-based buffer overflow in Adobe Acrobat and Reader 8.1.2 and earlier allows remote attackers to execute arbitrary code via a PDF file that calls the util.printf JavaScript function with a crafted format string argument, a related issue to CVE-2008-1104.
Frequently Asked SecOps Questions (CVE-2008-2992)
FAQQ1. How critical is CVE-2008-2992 and is it actively exploited in the wild?
CVE-2008-2992 is rated CVSS 7.8 (HIGH) with a 30-day EPSS exploitation probability of 99.8%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2008-2992?
Primary impacted vendors include adobe across acrobat, reader. Scope summary: Adobe Acrobat and Reader versions 8.1.2 and earlier across all supported operating systems
Q3. What temporary mitigations or workarounds exist for CVE-2008-2992 before patching?
[Mitigation] Upgrade to the latest patched version or disable JavaScript execution within PDF documents Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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