CVE-2016-5361 — Improper Input Validation in Libreswan

CWE-20 — Improper Input Validation8 documents6 sources
Severity
7.5HIGHNVD
EPSS
1.0%
top 23.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
LibreswanDebian Libreswan
Timeline
PublishedJun 16
Latest updateApr 1

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.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

1
GHSA
GHSA-pvgh-6wjg-x887: programs/pluto/ikev1↗2022-05-17
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📋Vendor Advisories

2
Red Hat
IKEv1 protocol is vulnerable to DoS amplification attack↗2016-03-14
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Debian
CVE-2016-5361: libreswan - programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder...↗2016
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📄Research Papers

1
RFC
Deprecation of the Internet Key Exchange Version 1 (IKEv1) Protocol and Obsoleted Algorithms↗2023-04-01
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💬Community

2
Bugzilla
CVE-2016-5361 libreswan: IKE/IKEv2 protocol is vulnerable to DoS amplification attack [fedora-all]↗2016-06-10
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Bugzilla
CVE-2016-5361 IKEv1 protocol is vulnerable to DoS amplification attack↗2016-02-15
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