High severity · published Jun 16, 2016
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…
7.5
CVSS
2.7%
EPSS
No
On KEV
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:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libreswan · Libreswan
through 3.16 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-5361
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-5361
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2016-2603.html
www.openwall.com
http://www.openwall.com/lists/oss-security/2016/06/10/4
Patch
https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6
lists.libreswan.org
https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html
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