Reachable Assertion Affecting libreswan package, versions <0:3.15-5.el7_1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.26% (92nd percentile)

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  • Snyk IDSNYK-RHEL7-LIBRESWAN-5064743
  • published26 Jul 2021
  • disclosed25 Aug 2015

Introduced: 25 Aug 2015

CVE-2015-3240  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade RHEL:7 libreswan to version 0:3.15-5.el7_1 or higher.
This issue was patched in RHSA-2015:1979.

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.

The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.

CVSS Scores

version 3.1