SUSE SLES15 Security Update : nginx (SUSE-SU-2019:2309-1) (0-Length Headers Leak) (Data Dribble) (Resource Loop)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:2309-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(128544);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id(
    "CVE-2018-16843",
    "CVE-2018-16844",
    "CVE-2018-16845",
    "CVE-2019-9511",
    "CVE-2019-9513",
    "CVE-2019-9516"
  );
  script_xref(name:"CEA-ID", value:"CEA-2019-0643");

  script_name(english:"SUSE SLES15 Security Update : nginx (SUSE-SU-2019:2309-1) (0-Length Headers Leak) (Data Dribble) (Resource Loop)");

  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 nginx fixes the following issues :

Security issues fixed :

CVE-2019-9511: Fixed a denial of service by manipulating the window
size and stream prioritization (bsc#1145579).

CVE-2019-9513: Fixed a denial of service caused by resource loops
(bsc#1145580).

CVE-2019-9516: Fixed a denial of service caused by header leaks
(bsc#1145582).

CVE-2018-16845: Fixed denial of service and memory disclosure via mp4
module (bsc#1115015).

CVE-2018-16843: Fixed excessive memory consumption in HTTP/2
implementation (bsc#1115022).

CVE-2018-16844: Fixed excessive CPU usage via flaw in HTTP/2
implementation (bsc#1115025).

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=1115015");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1115022");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1115025");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1145579");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1145580");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1145582");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-16843/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-16844/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-16845/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-9511/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-9513/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-9516/");
  # https://www.suse.com/support/update/announcement/2019/suse-su-20192309-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b73be31f");
  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 Module for Server Applications 15-SP1:zypper in
-t patch SUSE-SLE-Module-Server-Applications-15-SP1-2019-2309=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools
15-SP1:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-2309=1");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-16845");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nginx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nginx-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nginx-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  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) 2019-2022 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:"^(SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES15", "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 == "SLES15" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"1", reference:"nginx-1.14.2-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"nginx-debuginfo-1.14.2-6.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"nginx-debugsource-1.14.2-6.3.1")) 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, "nginx");
}