CVE-2006-5873
UnknownEPSS 2.22%
Last modified
CVE-2006-5873 is a vulnerability of currently unknown severity. Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.. EPSS estimates a 2.22% chance of exploitation in the next 30 days.
Description
Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| L2tpns | L2tpns | 1.1 |
| L2tpns | L2tpns | 2.0.13 |
| L2tpns | L2tpns | 2.1 |
| Debian | Debian Linux | 3.1 |
References
- http://secunia.com/advisories/23230Patch, Vendor Advisory
- http://secunia.com/advisories/23333Patch, Vendor Advisory
- http://www.debian.org/security/2006/dsa-1230Patch, Vendor Advisory
- http://www.securityfocus.com/bid/21443Vendor Advisory
- http://secunia.com/advisories/23230Patch, Vendor Advisory
- http://secunia.com/advisories/23333Patch, Vendor Advisory
- http://www.debian.org/security/2006/dsa-1230Patch, Vendor Advisory
- http://www.securityfocus.com/bid/21443Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2006-5873?
Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.
How severe is CVE-2006-5873?
Severity scoring for CVE-2006-5873 is pending analysis. The EPSS model estimates a 2.22% probability of exploitation in the next 30 days.
How do I fix CVE-2006-5873?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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