RHEL 6 : transfig (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 transfig. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(196522);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");

  script_cve_id(
    "CVE-2017-16899",
    "CVE-2018-16140",
    "CVE-2019-14275",
    "CVE-2019-19555",
    "CVE-2019-19746",
    "CVE-2019-19797",
    "CVE-2020-21529",
    "CVE-2020-21530",
    "CVE-2020-21531",
    "CVE-2020-21532",
    "CVE-2020-21533",
    "CVE-2020-21534",
    "CVE-2020-21535",
    "CVE-2020-21675",
    "CVE-2020-21676",
    "CVE-2020-21678",
    "CVE-2020-21680",
    "CVE-2020-21681",
    "CVE-2020-21682",
    "CVE-2020-21683",
    "CVE-2020-21684",
    "CVE-2021-32280"
  );

  script_name(english:"RHEL 6 : transfig (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.

  - transfig: Buffer underwrite in read.c:get_line() via crafted FIG file (CVE-2018-16140)

  - An array index error in the fig2dev program in Xfig 3.2.6a allows remote attackers to cause a denial-of-
    service attack or information disclosure with a maliciously crafted Fig format file, related to a negative
    font value in dev/gentikz.c, and the read_textobject functions in read.c and read1_3.c. (CVE-2017-16899)

  - Xfig fig2dev 3.2.7a has a stack-based buffer overflow in the calc_arrow function in bound.c.
    (CVE-2019-14275)

  - read_textobject in read.c in Xfig fig2dev 3.2.7b has a stack-based buffer overflow because of an incorrect
    sscanf. (CVE-2019-19555)

  - make_arrow in arrow.c in Xfig fig2dev 3.2.7b allows a segmentation fault and out-of-bounds write because
    of an integer overflow via a large arrow type. (CVE-2019-19746)

  - read_colordef in read.c in Xfig fig2dev 3.2.7b has an out-of-bounds write. (CVE-2019-19797)

  - fig2dev 3.2.7b contains a stack buffer overflow in the bezier_spline function in genepic.c.
    (CVE-2020-21529)

  - fig2dev 3.2.7b contains a segmentation fault in the read_objects function in read.c. (CVE-2020-21530)

  - fig2dev 3.2.7b contains a global buffer overflow in the conv_pattern_index function in gencgm.c.
    (CVE-2020-21531)

  - fig2dev 3.2.7b contains a global buffer overflow in the setfigfont function in genepic.c. (CVE-2020-21532)

  - fig2dev 3.2.7b contains a stack buffer overflow in the read_textobject function in read.c.
    (CVE-2020-21533)

  - fig2dev 3.2.7b contains a global buffer overflow in the get_line function in read.c. (CVE-2020-21534)

  - fig2dev 3.2.7b contains a segmentation fault in the gencgm_start function in gencgm.c. (CVE-2020-21535)

  - A stack-based buffer overflow in the genptk_text component in genptk.c of fig2dev 3.2.7b allows attackers
    to cause a denial of service (DOS) via converting a xfig file into ptk format. (CVE-2020-21675)

  - A stack-based buffer overflow in the genpstrx_text() component in genpstricks.c of fig2dev 3.2.7b allows
    attackers to cause a denial of service (DOS) via converting a xfig file into pstricks format.
    (CVE-2020-21676)

  - A global buffer overflow in the genmp_writefontmacro_latex component in genmp.c of fig2dev 3.2.7b allows
    attackers to cause a denial of service (DOS) via converting a xfig file into mp format. (CVE-2020-21678)

  - A stack-based buffer overflow in the put_arrow() component in genpict2e.c of fig2dev 3.2.7b allows
    attackers to cause a denial of service (DOS) via converting a xfig file into pict2e format.
    (CVE-2020-21680)

  - A global buffer overflow in the set_color component in genge.c of fig2dev 3.2.7b allows attackers to cause
    a denial of service (DOS) via converting a xfig file into ge format. (CVE-2020-21681)

  - A global buffer overflow in the set_fill component in genge.c of fig2dev 3.2.7b allows attackers to cause
    a denial of service (DOS) via converting a xfig file into ge format. (CVE-2020-21682)

  - A global buffer overflow in the shade_or_tint_name_after_declare_color in genpstricks.c of fig2dev 3.2.7b
    allows attackers to cause a denial of service (DOS) via converting a xfig file into pstricks format.
    (CVE-2020-21683)

  - A global buffer overflow in the put_font in genpict2e.c of fig2dev 3.2.7b allows attackers to cause a
    denial of service (DOS) via converting a xfig file into pict2e format. (CVE-2020-21684)

  - An issue was discovered in fig2dev before 3.2.8.. A NULL pointer dereference exists in the function
    compute_closed_spline() located in trans_spline.c. It allows an attacker to cause Denial of Service. The
    fixed version of fig2dev is 3.2.8. (CVE-2021-32280)

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-2018-16140");

  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:"2017/11/20");
  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:transfig");
  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':'transfig', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'transfig'}
    ]
  }
];


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, 'transfig');
}