Vulnerabilities > CVE-2016-1978 - Unspecified vulnerability in Mozilla Firefox

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(90751);
  script_version("2.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/25");

  script_cve_id("CVE-2016-1978", "CVE-2016-1979");

  script_name(english:"Scientific Linux Security Update : nss, nspr, nss-softokn, and nss-util on SL7.x x86_64 (20160425)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The following packages have been upgraded to a newer upstream version:
nss (3.21.0), nss-util (3.21.0), nspr (4.11.0).

Security Fix(es) :

  - A use-after-free flaw was found in the way NSS handled
    DHE (DiffieHellman key exchange) and ECDHE (Elliptic
    Curve Diffie-Hellman key exchange) handshake messages. A
    remote attacker could send a specially crafted handshake
    message that, when parsed by an application linked
    against NSS, would cause that application to crash or,
    under certain special conditions, execute arbitrary code
    using the permissions of the user running the
    application. (CVE-2016-1978)

  - A use-after-free flaw was found in the way NSS processed
    certain DER (Distinguished Encoding Rules) encoded
    cryptographic keys. An attacker could use this flaw to
    create a specially crafted DER encoded certificate
    which, when parsed by an application compiled against
    the NSS library, could cause that application to crash,
    or execute arbitrary code using the permissions of the
    user running the application. (CVE-2016-1979)

Bug Fix(es) :

  - The nss-softokn package has been updated to be
    compatible with NSS 3.21."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1604&L=scientific-linux-errata&F=&S=&P=14559
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?81f22e3c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nspr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nspr-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nspr-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-softokn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-softokn-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-softokn-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-softokn-freebl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-softokn-freebl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-util");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-util-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nss-util-devel");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);


flag = 0;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nspr-4.11.0-1.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nspr-debuginfo-4.11.0-1.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nspr-devel-4.11.0-1.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-debuginfo-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-devel-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-pkcs11-devel-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-softokn-3.16.2.3-14.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-softokn-debuginfo-3.16.2.3-14.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-softokn-devel-3.16.2.3-14.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-softokn-freebl-3.16.2.3-14.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-softokn-freebl-devel-3.16.2.3-14.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-sysinit-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-tools-3.21.0-9.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-util-3.21.0-2.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-util-debuginfo-3.21.0-2.2.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nss-util-devel-3.21.0-2.2.el7_2")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nspr / nspr-debuginfo / nspr-devel / nss / nss-debuginfo / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(89766);
  script_version("2.10");
  script_cvs_date("Date: 2018/11/21 10:46:31");

  script_cve_id("CVE-2016-1938", "CVE-2016-1978");

  script_name(english:"FreeBSD : NSS -- multiple vulnerabilities (75091516-6f4b-4059-9884-6727023dc366)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Mozilla Foundation reports :

Security researcher Hanno Bock reported that calculations with mp_div
and mp_exptmod in Network Security Services (NSS) can produce wrong
results in some circumstances. These functions are used within NSS for
a variety of cryptographic division functions, leading to potential
cryptographic weaknesses.

Mozilla developer Eric Rescorla reported that a failed allocation
during DHE and ECDHE handshakes would lead to a use-after-free
vulnerability."
  );
  # https://www.mozilla.org/security/advisories/mfsa2016-07/
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.mozilla.org/en-US/security/advisories/mfsa2016-07/"
  );
  # https://www.mozilla.org/security/advisories/mfsa2016-15/
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.mozilla.org/en-US/security/advisories/mfsa2016-15/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://hg.mozilla.org/projects/nss/rev/a555bf0fc23a"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://hg.mozilla.org/projects/nss/rev/a245a4ccd354"
  );
  # https://vuxml.freebsd.org/freebsd/75091516-6f4b-4059-9884-6727023dc366.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?71716e32"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c6-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-firefox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-seamonkey");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:nss");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/01/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/09");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"nss<3.21")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c6-nss<3.21")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-firefox<44.0,1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-seamonkey<2.41")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2016:0591 and 
# Oracle Linux Security Advisory ELSA-2016-0591 respectively.
#

include("compat.inc");

if (description)
{
  script_id(90383);
  script_version("2.8");
  script_cvs_date("Date: 2019/09/27 13:00:37");

  script_cve_id("CVE-2016-1978", "CVE-2016-1979");
  script_xref(name:"RHSA", value:"2016:0591");

  script_name(english:"Oracle Linux 6 : nspr / nss / nss-util (ELSA-2016-0591)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2016:0591 :

An update for nss, nss-util, and nspr is now available for Red Hat
Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Network Security Services (NSS) is a set of libraries designed to
support the cross-platform development of security-enabled client and
server applications. The nss-util packages provide utilities for use
with the Network Security Services (NSS) libraries. Netscape Portable
Runtime (NSPR) provides platform independence for non-GUI operating
system facilities.

The following packages have been upgraded to a newer upstream version:
nss 3.21.0, nss-util 3.21.0, nspr 4.11.0. (BZ#1300629, BZ#1299874,
BZ#1299861)

Security Fix(es) :

* A use-after-free flaw was found in the way NSS handled DHE
(Diffie-Hellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman
key exchange) handshake messages. A remote attacker could send a
specially crafted handshake message that, when parsed by an
application linked against NSS, would cause that application to crash
or, under certain special conditions, execute arbitrary code using the
permissions of the user running the application. (CVE-2016-1978)

* A use-after-free flaw was found in the way NSS processed certain DER
(Distinguished Encoding Rules) encoded cryptographic keys. An attacker
could use this flaw to create a specially crafted DER encoded
certificate which, when parsed by an application compiled against the
NSS library, could cause that application to crash, or execute
arbitrary code using the permissions of the user running the
application. (CVE-2016-1979)

Red Hat would like to thank the Mozilla Project for reporting these
issues. Upstream acknowledges Eric Rescorla as the original reporter
of CVE-2016-1978; and Tim Taubert as the original reporter of
CVE-2016-1979."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2016-April/005940.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected nspr, nss and / or nss-util packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nspr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nspr-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-util");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-util-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"nspr-4.11.0-0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nspr-devel-4.11.0-0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-3.21.0-0.3.0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-devel-3.21.0-0.3.0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-pkcs11-devel-3.21.0-0.3.0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-sysinit-3.21.0-0.3.0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-tools-3.21.0-0.3.0.1.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-util-3.21.0-0.3.el6_7")) flag++;
if (rpm_check(release:"EL6", reference:"nss-util-devel-3.21.0-0.3.el6_7")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nspr / nspr-devel / nss / nss-devel / nss-pkcs11-devel / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2016-702.
#

include("compat.inc");

if (description)
{
  script_id(91240);
  script_version("2.4");
  script_cvs_date("Date: 2018/04/18 15:09:36");

  script_cve_id("CVE-2016-1978", "CVE-2016-1979");
  script_xref(name:"ALAS", value:"2016-702");

  script_name(english:"Amazon Linux AMI : nspr / nss-util,nss,nss-softokn (ALAS-2016-702)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A use-after-free flaw was found in the way NSS handled DHE
(DiffieHellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman
key exchange) handshake messages. A remote attacker could send a
specially crafted handshake message that, when parsed by an
application linked against NSS, would cause that application to crash
or, under certain special conditions, execute arbitrary code using the
permissions of the user running the application. (CVE-2016-1978)

A use-after-free flaw was found in the way NSS processed certain DER
(Distinguished Encoding Rules) encoded cryptographic keys. An attacker
could use this flaw to create a specially crafted DER encoded
certificate which, when parsed by an application compiled against the
NSS library, could cause that application to crash, or execute
arbitrary code using the permissions of the user running the
application. (CVE-2016-1979)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2016-702.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Run 'yum update nspr' to update your system.

Run 'yum update nss-util' to update your system.

Run 'yum update nss' to update your system.

Run 'yum update nss-softokn' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nspr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nspr-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nspr-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-softokn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-softokn-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-softokn-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-softokn-freebl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-softokn-freebl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-util");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-util-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-util-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 Tenable Network Security, Inc.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"ALA", reference:"nspr-4.11.0-1.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nspr-debuginfo-4.11.0-1.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nspr-devel-4.11.0-1.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-debuginfo-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-devel-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-pkcs11-devel-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-softokn-3.16.2.3-14.2.38.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-softokn-debuginfo-3.16.2.3-14.2.38.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-softokn-devel-3.16.2.3-14.2.38.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-softokn-freebl-3.16.2.3-14.2.38.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-softokn-freebl-devel-3.16.2.3-14.2.38.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-sysinit-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-tools-3.21.0-9.76.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-util-3.21.0-2.2.50.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-util-debuginfo-3.21.0-2.2.50.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-util-devel-3.21.0-2.2.50.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nspr / nspr-debuginfo / nspr-devel / nss / nss-debuginfo / etc");
}