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Vulnerability Details : CVE-2016-5361

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.
Publish Date : 2016-06-16 Last Update Date : 2017-01-17
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2016:2603: libreswan security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20162603 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2016-5361

# Product Type Vendor Product Version Update Edition Language
1 Application Libreswan Libreswan 3.16 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Libreswan Libreswan 1

- References For CVE-2016-5361

https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html
MLIST [swan-dev] 20160313 Proposal: Do not retransmit IKEv1 reply for initial responder states
http://rhn.redhat.com/errata/RHSA-2016-2603.html
REDHAT RHSA-2016:2603
http://www.openwall.com/lists/oss-security/2016/06/10/4
MLIST [oss-security] 20160610 Re: CVE Request: IKEv1 protocol is vulnerable to DoS amplification attack
https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6 CONFIRM

- Metasploit Modules Related To CVE-2016-5361

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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