RHEL 6 : elfutils (Unpatched Vulnerability)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory elfutils. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(195525);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");

  script_cve_id(
    "CVE-2016-10254",
    "CVE-2016-10255",
    "CVE-2017-7607",
    "CVE-2017-7608",
    "CVE-2017-7609",
    "CVE-2017-7610",
    "CVE-2017-7611",
    "CVE-2017-7612",
    "CVE-2017-7613",
    "CVE-2018-16062",
    "CVE-2018-16403",
    "CVE-2018-18310",
    "CVE-2018-18520",
    "CVE-2018-18521",
    "CVE-2019-7150",
    "CVE-2019-7664",
    "CVE-2019-7665",
    "CVE-2021-33294",
    "CVE-2024-25260"
  );

  script_name(english:"RHEL 6 : elfutils (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - elfutils: eu-size cannot handle recursive ar files (CVE-2018-18520)

  - elfutils: heap-based buffer over-read in function elf32_xlatetom in elf32_xlatetom.c (CVE-2019-7665)

  - The allocate_elf function in common.h in elfutils before 0.168 allows remote attackers to cause a denial
    of service (crash) via a crafted ELF file, which triggers a memory allocation failure. (CVE-2016-10254)

  - The __libelf_set_rawdata_wrlock function in elf_getdata.c in elfutils before 0.168 allows remote attackers
    to cause a denial of service (crash) via a crafted (1) sh_off or (2) sh_size ELF header value, which
    triggers a memory allocation failure. (CVE-2016-10255)

  - The handle_gnu_hash function in readelf.c in elfutils 0.168 allows remote attackers to cause a denial of
    service (heap-based buffer over-read and application crash) via a crafted ELF file. (CVE-2017-7607)

  - The ebl_object_note_type_name function in eblobjnotetypename.c in elfutils 0.168 allows remote attackers
    to cause a denial of service (heap-based buffer over-read and application crash) via a crafted ELF file.
    (CVE-2017-7608)

  - elf_compress.c in elfutils 0.168 does not validate the zlib compression factor, which allows remote
    attackers to cause a denial of service (memory consumption) via a crafted ELF file. (CVE-2017-7609)

  - The check_group function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial of
    service (heap-based buffer over-read and application crash) via a crafted ELF file. (CVE-2017-7610)

  - The check_symtab_shndx function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial
    of service (heap-based buffer over-read and application crash) via a crafted ELF file. (CVE-2017-7611)

  - The check_sysv_hash function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial of
    service (heap-based buffer over-read and application crash) via a crafted ELF file. (CVE-2017-7612)

  - elflint.c in elfutils 0.168 does not validate the number of sections and the number of segments, which
    allows remote attackers to cause a denial of service (memory consumption) via a crafted ELF file.
    (CVE-2017-7613)

  - dwarf_getaranges in dwarf_getaranges.c in libdw in elfutils before 2018-08-18 allows remote attackers to
    cause a denial of service (heap-based buffer over-read) via a crafted file. (CVE-2018-16062)

  - libdw in elfutils 0.173 checks the end of the attributes list incorrectly in dwarf_getabbrev in
    dwarf_getabbrev.c and dwarf_hasattr in dwarf_hasattr.c, leading to a heap-based buffer over-read and an
    application crash. (CVE-2018-16403)

  - An invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl in
    elfutils through v0.174. The vulnerability allows attackers to cause a denial of service (application
    crash) with a crafted ELF file, as demonstrated by consider_notes. (CVE-2018-18310)

  - Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow
    remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated
    by eu-ranlib, because a zero sh_entsize is mishandled. (CVE-2018-18521)

  - An issue was discovered in elfutils 0.175. A segmentation fault can occur in the function elf64_xlatetom
    in libelf/elf32_xlatetom.c, due to dwfl_segment_report_module not checking whether the dyn data read from
    a core file is truncated. A crafted input can cause a program crash, leading to denial-of-service, as
    demonstrated by eu-stack. (CVE-2019-7150)

  - In elfutils 0.175, a negative-sized memcpy is attempted in elf_cvt_note in libelf/note_xlate.h because of
    an incorrect overflow check. Crafted elf input causes a segmentation fault, leading to denial of service
    (program crash). (CVE-2019-7664)

  - In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows
    attackers to cause a denial of service (infinite loop) via crafted file. (CVE-2021-33294)

  - elfutils v0.189 was discovered to contain a NULL pointer dereference via the handle_verdef() function at
    readelf.c. (CVE-2024-25260)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
  script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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-2019-7665");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2018-18520");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:elfutils");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'pkgs': [
      {'reference':'elfutils', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'elfutils'}
    ]
  }
];


var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
  foreach var pkg ( constraint_array['pkgs'] ) {
    var unpatched_pkg = NULL;
    var _release = NULL;
    var sp = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (unpatched_pkg &&
        _release &&
        (!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
        unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : unpatched_packages_report()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'elfutils');
}