SUSE SLES12 Security Update : exiv2 (SUSE-SU-2022:4252-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:4252-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(168254);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/09");

  script_cve_id(
    "CVE-2018-20097",
    "CVE-2019-13112",
    "CVE-2021-29457",
    "CVE-2021-29473",
    "CVE-2021-31291",
    "CVE-2021-32815",
    "CVE-2021-34334",
    "CVE-2021-37620"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2022:4252-1");

  script_name(english:"SUSE SLES12 Security Update : exiv2 (SUSE-SU-2022:4252-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by multiple vulnerabilities as
referenced in the SUSE-SU-2022:4252-1 advisory.

  - There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2
    0.27-RC3. A crafted input will lead to a remote denial of service attack. (CVE-2018-20097)

  - A PngChunk::parseChunkContent uncontrolled memory allocation in Exiv2 through 0.27.1 allows an attacker to
    cause a denial of service (crash due to an std::bad_alloc exception) via a crafted PNG image file.
    (CVE-2019-13112)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata
    of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow
    is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially
    exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a
    crafted image file. Note that this bug is only triggered when _writing_ the metadata, which is a less
    frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2
    command-line application, you need to add an extra command-line argument such as `insert`. The bug is
    fixed in version v0.27.4. (CVE-2021-29457)

  - Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
    ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a
    command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image
    files. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file.
    An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if
    they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered
    when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For
    example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line
    argument such as `insert`. The bug is fixed in version v0.27.4. Please see our security policy for
    information about Exiv2 security. (CVE-2021-29473)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata
    of image files. The assertion failure is triggered when Exiv2 is used to modify the metadata of a crafted
    image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they
    can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when
    modifying the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For
    example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line
    argument such as `fi`. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and
    bug fix: #1739 ### For more information Please see our [security
    policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.
    (CVE-2021-32815)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1119562");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1142681");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185002");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186231");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188733");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189332");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189337");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189338");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-20097");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-13112");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-29457");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-29473");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-31291");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-32815");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-34334");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-37620");
  # https://lists.suse.com/pipermail/sle-security-updates/2022-November/013131.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d83830e7");
  script_set_attribute(attribute:"solution", value:
"Update the affected libexiv2-12 package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-29457");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/11/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/11/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libexiv2-12");
  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) 2022-2023 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('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12|SLES_SAP12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12 / SLES_SAP12', 'SUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES12 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP12" && (! preg(pattern:"^(4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP12 SP4/5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'libexiv2-12-0.23-12.18.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.4']},
    {'reference':'libexiv2-12-0.23-12.18.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'libexiv2-12-0.23-12.18.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libexiv2-12');
}