CVE-2022-29190
📋 TL;DR
CVE-2022-29190 is a denial-of-service vulnerability in Pion DTLS, a Go implementation of Datagram Transport Layer Security. Attackers can send specially crafted packets that cause the DTLS implementation to enter an infinite loop, leading to service disruption. Any application using vulnerable versions of Pion DTLS for secure UDP communications is affected.
💻 Affected Systems
- Pion DTLS
📦 What is this software?
Dtls by Pion
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage through resource exhaustion (CPU 100%), potentially affecting all DTLS connections and causing cascading failures in dependent services.
Likely Case
Targeted denial-of-service attacks against specific services using Pion DTLS, causing temporary service disruption until the process is restarted.
If Mitigated
Minimal impact if patched version is deployed; otherwise, services remain vulnerable to DoS attacks from network-accessible attackers.
🎯 Exploit Status
The advisory describes the vulnerability clearly, making exploitation straightforward for attackers with networking knowledge. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.4
Vendor Advisory: https://github.com/pion/dtls/security/advisories/GHSA-cm8f-h6j3-p25c
Restart Required: Yes
Instructions:
1. Update Go dependencies: go get github.com/pion/dtls/v2@v2.1.4
2. Rebuild and redeploy all applications using Pion DTLS
3. Restart affected services
🔧 Temporary Workarounds
No known workarounds
allThe vendor advisory states there are no known workarounds available
🧯 If You Can't Patch
- Implement network segmentation to restrict access to DTLS endpoints only to trusted sources
- Deploy rate limiting and packet filtering to detect and block abnormal DTLS traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check Go module dependencies: go list -m github.com/pion/dtls/v2Check Version:
go list -m github.com/pion/dtls/v2Verify Fix Applied:
Verify version is 2.1.4 or higher: go list -m github.com/pion/dtls/v2 | grep v2.1.4📡 Detection & Monitoring
Log Indicators:
- High CPU usage spikes in processes using DTLS
- Process crashes or hangs related to DTLS connections
- Abnormal termination of DTLS-enabled services
Network Indicators:
- Unusual volume of DTLS packets from single sources
- Malformed DTLS handshake packets
- Repeated connection attempts to DTLS ports
SIEM Query:
process.cpu.usage:>90 AND process.name:*dtls* OR process.cmdline:*pion/dtls*🔗 References
- https://github.com/pion/dtls/commit/e0b2ce3592e8e7d73713ac67b363a2e192a4cecf
- https://github.com/pion/dtls/releases/tag/v2.1.4
- https://github.com/pion/dtls/security/advisories/GHSA-cm8f-h6j3-p25c
- https://github.com/pion/dtls/commit/e0b2ce3592e8e7d73713ac67b363a2e192a4cecf
- https://github.com/pion/dtls/releases/tag/v2.1.4
- https://github.com/pion/dtls/security/advisories/GHSA-cm8f-h6j3-p25c
