SUSE SLED12 / SLES12 Security Update : gnutls (SUSE-SU-2018:2842-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:2842-1.
# The text itself is copyright (C) SUSE.
#

include('deprecated_nasl_level.inc');
include("compat.inc");

if (description)
{
  script_id(117702);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/25");

  script_cve_id("CVE-2017-10790", "CVE-2018-10844", "CVE-2018-10845", "CVE-2018-10846");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : gnutls (SUSE-SU-2018:2842-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"This update for gnutls fixes the following issues :

Security issues fixed :

Improved mitigations against Lucky 13 class of attacks

  - 'Just in Time' PRIME + PROBE cache-based side channel
    attack can lead to plaintext recovery (CVE-2018-10846,
    bsc#1105460)

  - HMAC-SHA-384 vulnerable to Lucky thirteen attack due to
    use of wrong constant (CVE-2018-10845, bsc#1105459)

  - HMAC-SHA-256 vulnerable to Lucky thirteen attack due to
    not enough dummy function calls (CVE-2018-10844,
    bsc#1105437)

The _asn1_check_identifier function in Libtasn1 caused a NULL pointer
dereference and crash (CVE-2017-10790, bsc#1047002)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1047002"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1105437"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1105459"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1105460"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-10790/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-10844/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-10845/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-10846/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20182842-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1c9a5223"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t
patch SUSE-SLE-SDK-12-SP3-2018-1990=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-1990=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP3-2018-1990=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-10845");
  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:novell:suse_linux:gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:gnutls-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:gnutls-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls-openssl27");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls-openssl27-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls28");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls28-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", reference:"gnutls-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"gnutls-debuginfo-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"gnutls-debugsource-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls-openssl27-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls-openssl27-debuginfo-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls28-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls28-32bit-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls28-debuginfo-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"libgnutls28-debuginfo-32bit-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"gnutls-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"gnutls-debuginfo-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"gnutls-debugsource-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libgnutls28-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libgnutls28-32bit-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libgnutls28-debuginfo-3.3.27-3.3.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libgnutls28-debuginfo-32bit-3.3.27-3.3.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnutls");
}