CVE-2022-24783
📋 TL;DR
This critical vulnerability in Deno runtime allows malicious code to bypass all permission checks and execute arbitrary shell commands with full system privileges. It affects all users running Deno versions 1.18.0 through 1.20.2. Deno Deploy users are not affected.
💻 Affected Systems
- Deno
📦 What is this software?
Deno by Deno
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise - attacker gains full control over the host system, can execute arbitrary commands, access sensitive data, install malware, or pivot to other systems.
Likely Case
Remote code execution leading to data theft, system manipulation, or deployment of ransomware/malware on vulnerable Deno applications.
If Mitigated
Limited impact if Deno runs in isolated containers with minimal privileges and network restrictions, though RCE would still be possible within the container.
🎯 Exploit Status
Exploitation requires the attacker to control code executed by Deno, which is common in many Deno applications. The vulnerability bypasses all permission checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.20.3
Vendor Advisory: https://github.com/denoland/deno/security/advisories/GHSA-838h-jqp6-cf2f
Restart Required: Yes
Instructions:
1. Stop all Deno processes. 2. Update Deno using: deno upgrade --version 1.20.3. 3. Verify the update with: deno --version. 4. Restart all Deno applications.
🔧 Temporary Workarounds
No workaround available
allThe vendor states there is no workaround for this vulnerability
🧯 If You Can't Patch
- Immediately isolate affected systems from network access
- Implement strict network segmentation and monitor for suspicious Deno process activity
🔍 How to Verify
Check if Vulnerable:
Run: deno --version and check if version is between 1.18.0 and 1.20.2 inclusiveCheck Version:
deno --versionVerify Fix Applied:
Run: deno --version and confirm version is 1.20.3 or higher📡 Detection & Monitoring
Log Indicators:
- Unexpected shell command execution from Deno processes
- Permission check bypass logs
- Deno process spawning unexpected child processes
Network Indicators:
- Deno processes making unexpected outbound connections
- Suspicious network activity from Deno runtime
SIEM Query:
process.name:deno AND (process.parent.name:deno OR process.cmdline:*sh* OR process.cmdline:*bash* OR process.cmdline:*cmd*)