EulerOS 2.0 SP5 : ImageMagick (EulerOS-SA-2021-2334)

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

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

if (description)
{
  script_id(153057);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/09");

  script_cve_id(
    "CVE-2021-20309",
    "CVE-2021-20311",
    "CVE-2021-20312",
    "CVE-2021-20313"
  );

  script_name(english:"EulerOS 2.0 SP5 : ImageMagick (EulerOS-SA-2021-2334)");
  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 ImageMagick packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - A flaw was found in ImageMagick in versions before
    7.0.11 and before 6.9.12, where a division by zero in
    WaveImage() of MagickCore/visual-effects.c may trigger
    undefined behavior via a crafted image file submitted
    to an application using ImageMagick. The highest threat
    from this vulnerability is to system
    availability.(CVE-2021-20309)

  - A flaw was found in ImageMagick in versions before
    7.0.11, where a division by zero in
    sRGBTransformImage() in the MagickCore/colorspace.c may
    trigger undefined behavior via a crafted image file
    that is submitted by an attacker processed by an
    application using ImageMagick. The highest threat from
    this vulnerability is to system
    availability.(CVE-2021-20311)

  - A flaw was found in ImageMagick in versions 7.0.11,
    where an integer overflow in WriteTHUMBNAILImage of
    coders/thumbnail.c may trigger undefined behavior via a
    crafted image file that is submitted by an attacker and
    processed by an application using ImageMagick. The
    highest threat from this vulnerability is to system
    availability.(CVE-2021-20312)

  - A flaw was found in ImageMagick in versions before
    7.0.11. A potential cipher leak when the calculate
    signatures in TransformSignature is possible. The
    highest threat from this vulnerability is to data
    confidentiality.(CVE-2021-20313)

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-2021-2334
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?83d33238");
  script_set_attribute(attribute:"solution", value:
"Update the affected ImageMagick packages.");
  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: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: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-2021-20313");
  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:ImageMagick");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ImageMagick-c++");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ImageMagick-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ImageMagick-perl");
  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 = ["ImageMagick-6.9.10.67-1.h6.eulerosv2r7",
        "ImageMagick-c++-6.9.10.67-1.h6.eulerosv2r7",
        "ImageMagick-libs-6.9.10.67-1.h6.eulerosv2r7",
        "ImageMagick-perl-6.9.10.67-1.h6.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_WARNING,
    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, "ImageMagick");
}