RedHat Update for libreswan RHSA-2016:2603-02

# SPDX-FileCopyrightText: 2016 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.871682");
  script_version("2024-03-21T05:06:54+0000");
  script_tag(name:"last_modification", value:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 2024)");
  script_tag(name:"creation_date", value:"2016-11-04 05:41:16 +0100 (Fri, 04 Nov 2016)");
  script_cve_id("CVE-2016-5361");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-01-18 02:59:00 +0000 (Wed, 18 Jan 2017)");
  script_tag(name:"qod_type", value:"package");
  script_name("RedHat Update for libreswan RHSA-2016:2603-02");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'libreswan'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"Libreswan is an implementation of IPsec
&amp  IKE for Linux. IPsec is the Internet Protocol Security and uses strong
cryptography to provide both authentication and encryption services. These
services allow you to build secure tunnels through untrusted networks such as
virtual private network (VPN).

Security Fix(es):

  * A traffic amplification flaw was found in the Internet Key Exchange
version 1 (IKEv1) protocol. A remote attacker could use a libreswan server
with IKEv1 enabled in a network traffic amplification denial of service
attack against other hosts on the network by sending UDP packets with a
spoofed source address to that server. (CVE-2016-5361)

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.3 Release Notes linked from the References section.");
  script_tag(name:"affected", value:"libreswan on Red Hat Enterprise Linux Server (v. 7)");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");

  script_xref(name:"RHSA", value:"2016:2603-02");
  script_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2016-November/msg00039.html");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_7");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release) exit(0);

res = "";

if(release == "RHENT_7")
{

  if ((res = isrpmvuln(pkg:"libreswan", rpm:"libreswan~3.15~8.el7", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"libreswan-debuginfo", rpm:"libreswan-debuginfo~3.15~8.el7", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}