CVE-2016-5361
7.5 · HIGHOverview
CVE-2016-5361 is a high-severity vulnerability affecting libreswan libreswan. It was published on June 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed UDP packet. NOTE: the original behavior complies with the IKEv1 protocol, but has a required security update from the libreswan vendor; as of 2016-06-10, it is expected that several other IKEv1 implementations will have vendor-required security updates, with separate CVE IDs assigned to each.
Remediation
Check the references section for vendor advisories and patches from libreswan. Update libreswan to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libreswan | libreswan | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2016-5361?
CVE-2016-5361 is a high-severity vulnerability affecting libreswan libreswan. It was published on June 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).
How severe is CVE-2016-5361?
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2016-5361?
Check the references section for vendor advisories and patches from libreswan. Update libreswan to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2016-5361?
CyberStrike's AI-powered security agents can automatically detect CVE-2016-5361 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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