CVE-2024-41835
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in Adobe Acrobat Reader that could allow an attacker to read sensitive memory contents. When exploited, it could bypass security mitigations like ASLR, potentially leading to further exploitation. Users of affected Acrobat Reader versions who open malicious PDF files are at risk.
💻 Affected Systems
- Adobe Acrobat Reader
📦 What is this software?
Acrobat by Adobe
Acrobat by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Memory disclosure could lead to ASLR bypass, enabling reliable exploitation of additional vulnerabilities for arbitrary code execution or system compromise.
Likely Case
Information disclosure of memory contents, potentially revealing sensitive data or enabling further exploitation attempts.
If Mitigated
Limited impact with proper security controls; memory read only without direct code execution.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious PDF). No public exploit code known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest version via Adobe's security updates
Vendor Advisory: https://helpx.adobe.com/security/products/acrobat/apsb24-57.html
Restart Required: Yes
Instructions:
1. Open Adobe Acrobat Reader
2. Go to Help > Check for Updates
3. Follow prompts to install available updates
4. Restart the application
🔧 Temporary Workarounds
Disable JavaScript in PDFs
allPrevents JavaScript-based exploitation vectors
Edit > Preferences > JavaScript > Uncheck 'Enable Acrobat JavaScript'
Use Protected View
allOpen untrusted PDFs in Protected View mode
File > Open > Select 'Protected View' option
🧯 If You Can't Patch
- Restrict PDF file opening to trusted sources only
- Use alternative PDF viewers for untrusted documents
🔍 How to Verify
Check if Vulnerable:
Check Help > About Adobe Acrobat Reader for version number and compare with affected versionsCheck Version:
Help > About Adobe Acrobat ReaderVerify Fix Applied:
Verify version is updated beyond affected versions listed in advisory📡 Detection & Monitoring
Log Indicators:
- Acrobat crash logs with memory access violations
- Unexpected PDF file openings from untrusted sources
Network Indicators:
- Downloads of PDF files from suspicious sources
SIEM Query:
source="acrobat.exe" AND (event_type="crash" OR event_type="error")