CVE-2024-40642
📋 TL;DR
This vulnerability in netty incubator codec.bhttp allows attackers to manipulate binary HTTP parsing to perform injection attacks. Attackers can achieve HTTP request smuggling, header injection, SSRF, and other protocol-based attacks by exploiting improper input validation. Systems using vulnerable versions of netty-incubator-codec-ohttp for binary HTTP parsing are affected.
💻 Affected Systems
- netty-incubator-codec-ohttp
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete control over HTTP requests leading to server compromise, data exfiltration, and lateral movement within the network via SSRF and request smuggling.
Likely Case
HTTP request smuggling enabling cache poisoning, session hijacking, and credential theft through crafted requests.
If Mitigated
Limited impact with proper network segmentation and input validation at application layer, though binary HTTP parsing remains vulnerable.
🎯 Exploit Status
Exploitation requires sending specially crafted binary HTTP requests to vulnerable endpoints. No public exploit code available at disclosure time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.13.Final
Vendor Advisory: https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-q8f2-hxq5-cp4h
Restart Required: Yes
Instructions:
1. Update netty-incubator-codec-ohttp dependency to version 0.0.13.Final. 2. Rebuild and redeploy affected applications. 3. Restart services using the updated library.
🔧 Temporary Workarounds
No workarounds available
allThe vendor advisory states there are no known workarounds for this vulnerability.
🧯 If You Can't Patch
- Implement strict input validation at application layer for all HTTP request parameters
- Deploy WAF with rules to detect and block malformed binary HTTP requests
🔍 How to Verify
Check if Vulnerable:
Check pom.xml or build.gradle for netty-incubator-codec-ohttp dependency version below 0.0.13.FinalCheck Version:
mvn dependency:tree | grep netty-incubator-codec-ohttp OR gradle dependencies | grep netty-incubator-codec-ohttpVerify Fix Applied:
Verify netty-incubator-codec-ohttp version is 0.0.13.Final or higher in dependency files📡 Detection & Monitoring
Log Indicators:
- Unusual binary HTTP request patterns
- HTTP parsing errors in application logs
- Unexpected HTTP header values
Network Indicators:
- Malformed binary HTTP requests
- Unusual request sizes or patterns in binary HTTP traffic
SIEM Query:
source="application_logs" AND ("BinaryHttpParser" OR "binary http" OR "netty-incubator") AND (error OR exception OR malformed)🔗 References
- https://github.com/netty/netty-incubator-codec-ohttp/commit/b687a0cf6ea1030232ea204d73bce82f2698e571
- https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-q8f2-hxq5-cp4h
- https://github.com/netty/netty-incubator-codec-ohttp/commit/b687a0cf6ea1030232ea204d73bce82f2698e571
- https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-q8f2-hxq5-cp4h
