Improper Input Validation Affecting libreswan package, versions <0:3.15-8.el7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.76% (82nd percentile)

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  • Snyk IDSNYK-RHEL7-LIBRESWAN-1457040
  • published26 Jul 2021
  • disclosed14 Mar 2016

Introduced: 14 Mar 2016

CVE-2016-5361  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:7 libreswan to version 0:3.15-8.el7 or higher.
This issue was patched in RHSA-2016:2603.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreswan package and not the libreswan package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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 Scores

version 3.1