Adobe Reader and Acrobat Memory Corruption Remote Code Execution Vulnerability (CVE-2013-3346) Technical Advisory
Executive & SecOps Summary
SECOPS ASSESSMENTAdobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03
Attackers can execute arbitrary code or cause a denial of service (memory corruption) via crafted PDF files
Immediately upgrade to patched versions (9.5.5, 10.1.7, 11.0.03 or later) and enforce sandbox security policies
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Apply the official security updates provided by Adobe to upgrade to secure versions (9.5.5, 10.1.7, 11.0.03, or later). In enterprise environments, administrators can query installed versions using the following PowerShell command:
# Query installed Adobe Reader/Acrobat versions via Registry
Get-ItemProperty HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* |
Where-Object { $_.DisplayName -like '*Adobe Acrobat*' -or $_.DisplayName -like '*Adobe Reader*' } |
Select-Object DisplayName, DisplayVersion2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, enforce Adobe's Protected Mode and Protected View via the registry to mitigate sandbox escape attempts and restrict unauthorized code execution.
Windows Registry Editor Version 5.00
; Force Enable Protected Mode for Adobe Reader 11
[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\11.0\Privileged]
"bProtectedMode"=dword:00000001
; Enable Protected View for files from untrusted locations
[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\11.0\TrustManager\Security]
"iProtectedView"=dword:000000023. Log Audit & IoC Verification Commands
Use the following script to identify potentially vulnerable installations and audit recently downloaded PDF files on endpoints.
#!/bin/bash
# Search for Adobe Reader executables on the system
echo '[*] Scanning for Adobe Reader installations...'
find / -name 'AcroRd32.exe' -o -name 'Acrobat.exe' 2>/dev/null
# Audit recently modified PDF files in user directories
echo '[*] Auditing recently modified PDF files...'
find /home -name '*.pdf' -mtime -7 2>/dev/nullBlock 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
This vulnerability (CVE-2013-3346) is a critical memory corruption flaw residing in legacy versions of Adobe Reader and Acrobat. The root cause stems from improper validation of input data boundaries (CWE-787) when the application parses malformed structures or streams within a PDF document. This lack of validation allows an attacker to corrupt the application's memory space.
2. Exploitation Mechanics & Attack Scenario
An attacker exploits this vulnerability by crafting a malicious PDF document containing specific malformed structures designed to trigger the memory corruption. This file is typically delivered via spear-phishing emails or hosted on compromised websites. When a victim opens the document, the parsing engine fails to handle the corrupted data, allowing the attacker to hijack the execution flow, bypass sandbox protections, and execute arbitrary shellcode with the privileges of the logged-in user.
3. Infrastructure & Business Impact
As a vulnerability listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, CVE-2013-3346 has been actively exploited in targeted attacks. Successful exploitation can lead to complete compromise of the victim's endpoint, serving as an initial entry point for lateral movement within the corporate network, data exfiltration, or ransomware deployment.
Official Vendor Advisories & References
Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2013-2718, CVE-2013-2719, CVE-2013-2720, CVE-2013-2721, CVE-2013-2722, CVE-2013-2723, CVE-2013-2725, CVE-2013-2726, CVE-2013-2731, CVE-2013-2732, CVE-2013-2734, CVE-2013-2735, CVE-2013-2736, CVE-2013-3337, CVE-2013-3338, CVE-2013-3339, CVE-2013-3340, and CVE-2013-3341.
Frequently Asked SecOps Questions (CVE-2013-3346)
FAQQ1. How critical is CVE-2013-3346 and is it actively exploited in the wild?
CVE-2013-3346 is rated CVSS 9.8 (CRITICAL) with a 30-day EPSS exploitation probability of 78.9%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2013-3346?
Primary impacted vendors include adobe across reader, acrobat. Scope summary: Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03
Q3. What temporary mitigations or workarounds exist for CVE-2013-3346 before patching?
[Mitigation] Immediately upgrade to patched versions (9.5.5, 10.1.7, 11.0.03 or later) and enforce sandbox security policies Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2013-3346
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