NewStart CGSL MAIN 6.02 : libexif Multiple Vulnerabilities (NS-SA-2021-0068)

##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2021-0068. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(147324);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/11");

  script_cve_id(
    "CVE-2019-9278",
    "CVE-2020-0093",
    "CVE-2020-0181",
    "CVE-2020-0182",
    "CVE-2020-0198",
    "CVE-2020-0452",
    "CVE-2020-12767",
    "CVE-2020-13113",
    "CVE-2020-13114"
  );

  script_name(english:"NewStart CGSL MAIN 6.02 : libexif Multiple Vulnerabilities (NS-SA-2021-0068)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 6.02, has libexif packages installed that are affected by multiple
vulnerabilities:

  - In libexif, there is a possible out of bounds write due to an integer overflow. This could lead to remote
    escalation of privilege in the media content provider with no additional execution privileges needed. User
    interaction is needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-112537774
    (CVE-2019-9278)

  - exif_entry_get_value in exif-entry.c in libexif 0.6.21 has a divide-by-zero error. (CVE-2020-12767)

  - An issue was discovered in libexif before 0.6.22. Use of uninitialized memory in EXIF Makernote handling
    could lead to crashes and potential use-after-free conditions. (CVE-2020-13113)

  - An issue was discovered in libexif before 0.6.22. An unrestricted size in handling Canon EXIF MakerNote
    data could lead to consumption of large amounts of compute time for decoding EXIF data. (CVE-2020-13114)

  - In exif_data_load_data_thumbnail of exif-data.c, there is a possible denial of service due to an integer
    overflow. This could lead to remote denial of service with no additional execution privileges needed. User
    interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-145075076
    (CVE-2020-0181)

  - In exif_data_load_data_content of exif-data.c, there is a possible UBSAN abort due to an integer overflow.
    This could lead to remote denial of service with no additional execution privileges needed. User
    interaction is needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-146428941
    (CVE-2020-0198)

  - In exif_entry_get_value of exif-entry.c, there is a possible out of bounds read due to a missing bounds
    check. This could lead to local information disclosure with no additional execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID:
    A-147140917 (CVE-2020-0182)

  - In exif_data_save_data_entry of exif-data.c, there is a possible out of bounds read due to a missing
    bounds check. This could lead to local information disclosure with no additional execution privileges
    needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.0 Android-8.1
    Android-9 Android-10Android ID: A-148705132 (CVE-2020-0093)

  - In exif_entry_get_value of exif-entry.c, there is a possible out of bounds write due to an integer
    overflow. This could lead to remote code execution if a third party app used this library to process
    remote image data with no additional execution privileges needed. User interaction is not needed for
    exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11 Android-8.0Android ID:
    A-159625731 (CVE-2020-0452)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2021-0068");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL libexif packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
  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-2020-0452");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL 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/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  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/ZTE-CGSL/release');
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (release !~ "CGSL MAIN 6.02")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 6.02');

if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);

flag = 0;

pkgs = {
  'CGSL MAIN 6.02': [
    'libexif-0.6.22-5.el8_3',
    'libexif-debuginfo-0.6.22-5.el8_3',
    'libexif-debugsource-0.6.22-5.el8_3',
    'libexif-devel-0.6.22-5.el8_3',
    'libexif-doc-0.6.22-5.el8_3'
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:'ZTE ' + release, 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, 'libexif');
}