RHEL 7 : qpdf (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 qpdf. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(196057);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");

  script_cve_id(
    "CVE-2017-9208",
    "CVE-2017-9209",
    "CVE-2017-9210",
    "CVE-2017-11624",
    "CVE-2017-11625",
    "CVE-2017-11626",
    "CVE-2017-11627",
    "CVE-2017-12595",
    "CVE-2017-18183",
    "CVE-2017-18184",
    "CVE-2017-18185",
    "CVE-2017-18186",
    "CVE-2018-9918",
    "CVE-2021-25786",
    "CVE-2021-36978",
    "CVE-2024-24246"
  );

  script_name(english:"RHEL 7 : qpdf (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 7 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 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.

  - qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a (CVE-2018-9918)

  - A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a
    denial of service via a crafted file, related to the QPDFTokenizer::resolveLiteral function in
    QPDFTokenizer.cc after two consecutive calls to QPDFObjectHandle::parseInternal, aka an infinite loop.
    (CVE-2017-11624)

  - A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a
    denial of service via a crafted file, related to the QPDF::resolveObjectsInStream function in QPDF.cc, aka
    an infinite loop. (CVE-2017-11625)

  - A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a
    denial of service via a crafted file, related to the QPDFTokenizer::resolveLiteral function in
    QPDFTokenizer.cc after four consecutive calls to QPDFObjectHandle::parseInternal, aka an infinite loop.
    (CVE-2017-11626)

  - A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a
    denial of service via a crafted file, related to the PointerHolder function in PointerHolder.hh, aka an
    infinite loop. (CVE-2017-11627)

  - The tokenizer in QPDF 6.0.0 and 7.0.b1 is recursive for arrays and dictionaries, which allows remote
    attackers to cause a denial of service (stack consumption and segmentation fault) or possibly have
    unspecified other impact via a PDF document with a deep data structure, as demonstrated by a crash in
    QPDFObjectHandle::parseInternal in libqpdf/QPDFObjectHandle.cc. (CVE-2017-12595)

  - An issue was discovered in QPDF before 7.0.0. There is an infinite loop in the QPDFWriter::enqueueObject()
    function in libqpdf/QPDFWriter.cc. (CVE-2017-18183)

  - An issue was discovered in QPDF before 7.0.0. There is a stack-based out-of-bounds read in the function
    iterate_rc4 in QPDF_encryption.cc. (CVE-2017-18184)

  - An issue was discovered in QPDF before 7.0.0. There is a large heap-based out-of-bounds read in the
    Pl_Buffer::write function in Pl_Buffer.cc. It is caused by an integer overflow in the PNG filter.
    (CVE-2017-18185)

  - An issue was discovered in QPDF before 7.0.0. There is an infinite loop due to looping xref tables in
    QPDF.cc. (CVE-2017-18186)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to cause a denial of service (infinite recursion and stack
    consumption) via a crafted PDF document, related to releaseResolved functions, aka qpdf-infiniteloop1.
    (CVE-2017-9208)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to cause a denial of service (infinite recursion and stack
    consumption) via a crafted PDF document, related to QPDFObjectHandle::parseInternal, aka qpdf-
    infiniteloop2. (CVE-2017-9209)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to cause a denial of service (infinite recursion and stack
    consumption) via a crafted PDF document, related to unparse functions, aka qpdf-infiniteloop3.
    (CVE-2017-9210)

  - An issue was discovered in QPDF version 10.0.4, allows remote attackers to execute arbitrary code via
    crafted .pdf file to Pl_ASCII85Decoder::write parameter in libqpdf. (CVE-2021-25786)

  - QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in
    Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream
    write fails. (CVE-2021-36978)

  - Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the
    std::__shared_count() function at /bits/shared_ptr_base.h. (CVE-2024-24246)

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: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-2018-9918");

  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:"2017/05/23");
  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:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qpdf");
  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: '7')) audit(AUDIT_OS_NOT, 'Red Hat 7.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':'qpdf', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qpdf'}
    ]
  }
];


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, 'qpdf');
}