CVE-2019-19005
📋 TL;DR
CVE-2019-19005 is a double-free vulnerability in autotrace 0.31.1 that allows attackers to cause memory corruption by processing a malformed bitmap image. This can lead to denial of service or potentially arbitrary code execution. Anyone using autotrace to process untrusted bitmap images is affected.
💻 Affected Systems
- autotrace
📦 What is this software?
Autotrace by Autotrace Project
Fedora by Fedoraproject
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if autotrace processes attacker-controlled images.
Likely Case
Application crash and denial of service when processing malicious bitmap files.
If Mitigated
No impact if autotrace is not used or only processes trusted images.
🎯 Exploit Status
Exploitation requires crafting a specific malformed bitmap image. No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit 9b438c6 (master branch)
Vendor Advisory: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NC6MUH2RLVEA634LHBNZ2KO7MQKI2RDZ/
Restart Required: No
Instructions:
1. Update autotrace to latest version from master branch. 2. Rebuild from source or use updated package from distribution repositories. 3. Replace existing autotrace binary with patched version.
🔧 Temporary Workarounds
Disable bitmap processing
allConfigure applications to reject or not process bitmap images through autotrace.
Input validation
allImplement strict validation of bitmap files before passing to autotrace.
🧯 If You Can't Patch
- Isolate autotrace usage to trusted environments only
- Implement network segmentation to limit exposure of systems using autotrace
🔍 How to Verify
Check if Vulnerable:
Check autotrace version: autotrace --version. If version is 0.31.1 or earlier, system is vulnerable.Check Version:
autotrace --version 2>/dev/null || echo 'autotrace not installed'Verify Fix Applied:
Verify autotrace version is newer than 0.31.1 or includes commit 9b438c6 from master branch.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults when processing bitmap files
- Memory corruption errors in system logs
Network Indicators:
- Unusual bitmap file uploads to systems using autotrace
SIEM Query:
Process:autotrace AND (EventID:1000 OR Signal:SIGSEGV)🔗 References
- https://github.com/autotrace/autotrace/commits/master
- https://github.com/autotrace/autotrace/pull/40
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NC6MUH2RLVEA634LHBNZ2KO7MQKI2RDZ/
- https://github.com/autotrace/autotrace/commits/master
- https://github.com/autotrace/autotrace/pull/40
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NC6MUH2RLVEA634LHBNZ2KO7MQKI2RDZ/
