EulerOS 2.0 SP5 : libwebp (EulerOS-SA-2021-2338)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(153081);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/09");

  script_cve_id(
    "CVE-2018-25009",
    "CVE-2018-25011",
    "CVE-2018-25012",
    "CVE-2018-25013",
    "CVE-2018-25014",
    "CVE-2020-36328",
    "CVE-2020-36329",
    "CVE-2020-36330",
    "CVE-2020-36331"
  );

  script_name(english:"EulerOS 2.0 SP5 : libwebp (EulerOS-SA-2021-2338)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the libwebp package installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - A flaw was found in libwebp in versions before 1.0.1.
    An out-of-bounds read was found in function
    ChunkAssignData. The highest threat from this
    vulnerability is to data confidentiality and to the
    service availability.(CVE-2020-36331)

  - A flaw was found in libwebp in versions before 1.0.1.
    An out-of-bounds read was found in function
    WebPMuxCreateInternal. The highest threat from this
    vulnerability is to data confidentiality and to the
    service availability.(CVE-2018-25009)

  - A flaw was found in libwebp in versions before 1.0.1. A
    heap-based buffer overflow was found in PutLE16(). The
    highest threat from this vulnerability is to data
    confidentiality and integrity as well as system
    availability.(CVE-2018-25011)

  - A flaw was found in libwebp in versions before 1.0.1.
    An out-of-bounds read was found in function
    WebPMuxCreateInternal. The highest threat from this
    vulnerability is to data confidentiality and to the
    service availability.(CVE-2018-25012)

  - A flaw was found in libwebp in versions before 1.0.1.
    An out-of-bounds read was found in function ShiftBytes.
    The highest threat from this vulnerability is to data
    confidentiality and to the service
    availability.(CVE-2018-25013)

  - A flaw was found in libwebp in versions before 1.0.1.
    An unitialized variable is used in function ReadSymbol.
    The highest threat from this vulnerability is to data
    confidentiality and integrity as well as system
    availability.(CVE-2018-25014)

  - A flaw was found in libwebp in versions before 1.0.1. A
    heap-based buffer overflow in function
    WebPDecodeRGBInto is possible due to an invalid check
    for buffer size. The highest threat from this
    vulnerability is to data confidentiality and integrity
    as well as system availability.(CVE-2020-36328)

  - A flaw was found in libwebp in versions before 1.0.1. A
    use-after-free was found due to a thread being killed
    too early. The highest threat from this vulnerability
    is to data confidentiality and integrity as well as
    system availability.(CVE-2020-36329)

  - A flaw was found in libwebp in versions before 1.0.1.
    An out-of-bounds read was found in function
    ChunkVerifyAndAssign. The highest threat from this
    vulnerability is to data confidentiality and to the
    service availability.(CVE-2020-36330)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2338
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f6a11fb2");
  script_set_attribute(attribute:"solution", value:
"Update the affected libwebp 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:N/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:"cvss_score_source", value:"CVE-2020-36329");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/09/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwebp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["libwebp-0.3.0-7.h2.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) 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, "libwebp");
}