SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2018:3910-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:3910-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(119213);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/18");

  script_cve_id("CVE-2018-15473");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2018:3910-1)");

  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 openssh fixes the following issues :

Following security issues have been fixed :

CVE-2018-15473: OpenSSH was prone to a user existance oracle
vulnerability due to not delaying bailout for an invalid
authenticating user until after the packet containing the request has
been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and
auth2-pubkey.c. (bsc#1105010)

The update package also includes non-security fixes. See advisory for
details.

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=1091396");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105010");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=964336");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15473/");
  # https://www.suse.com/support/update/announcement/2018/suse-su-20183910-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4fa03082");
  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 OpenStack Cloud 7:zypper in -t patch
SUSE-OpenStack-Cloud-7-2018-2783=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch
SUSE-SLE-SAP-12-SP2-2018-2783=1

SUSE Linux Enterprise Server 12-SP4:zypper in -t patch
SUSE-SLE-SERVER-12-SP4-2018-2783=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-2783=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2018-2783=1

SUSE Linux Enterprise Server 12-SP2-BCL:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-BCL-2018-2783=1

SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP4-2018-2783=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP3-2018-2783=1

SUSE Enterprise Storage 4:zypper in -t patch
SUSE-Storage-4-2018-2783=1

SUSE CaaS Platform ALL :

To install this update, use the SUSE CaaS Platform Velum dashboard. It
will inform you if it detects new updates and let you then trigger
updating of the complete cluster in a controlled way.

SUSE CaaS Platform 3.0 :

To install this update, use the SUSE CaaS Platform Velum dashboard. It
will inform you if it detects new updates and let you then trigger
updating of the complete cluster in a controlled way.

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch
SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2018-2783=1");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-15473");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"^(2|3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3/4", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3/4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-askpass-gnome-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-debugsource-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-fips-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-helpers-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-helpers-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-askpass-gnome-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-debugsource-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-fips-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-helpers-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-helpers-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-askpass-gnome-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-debugsource-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-fips-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-helpers-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-helpers-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-askpass-gnome-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-debugsource-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-helpers-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-helpers-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-askpass-gnome-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-debuginfo-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-debugsource-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-helpers-7.2p2-74.30.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-helpers-debuginfo-7.2p2-74.30.1")) 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, "openssh");
}