MiracleLinux 7 : libxml2-2.9.1-6.0.1.el7.AXS7.2 (AXSA:2015-924:01)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Miracle Linux Security Advisory AXSA:2015-924:01.
##

include('compat.inc');

if (description)
{
  script_id(291552);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/19");

  script_cve_id(
    "CVE-2015-1819",
    "CVE-2015-5312",
    "CVE-2015-7497",
    "CVE-2015-7498",
    "CVE-2015-7499",
    "CVE-2015-7500",
    "CVE-2015-7941",
    "CVE-2015-7942",
    "CVE-2015-8241",
    "CVE-2015-8242",
    "CVE-2015-8317"
  );

  script_name(english:"MiracleLinux 7 : libxml2-2.9.1-6.0.1.el7.AXS7.2 (AXSA:2015-924:01)");

  script_set_attribute(attribute:"synopsis", value:
"The remote MiracleLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
AXSA:2015-924:01 advisory.

    This library allows to manipulate XML files. It includes support
    to read, modify and write XML and HTML files. There is DTDs support
    this includes parsing and validation even with complex DtDs, either
    at parse time or later once the document has been modified. The output
    can be a simple SAX stream or and in-memory DOM like representations.
    In this case one can use the built-in XPath and XPointer implementation
    to select sub nodes or ranges. A flexible Input/Output mechanism is
    available, with existing HTTP and FTP modules and combined to an
    URI library.
    Security issues fixed with this release:
    CVE-2015-1819
    The xmlreader in libxml allows remote attackers to cause a denial of
    service (memory consumption) via crafted XML data, related to an XML
    Entity Expansion (XEE) attack.
    CVE-2015-5312
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-7497
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-7498
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-7499
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-7500
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-7941
    libxml2 2.9.2 does not properly stop parsing invalid input, which
    allows context-dependent attackers to cause a denial of service
    (out-of-bounds read and libxml2 crash) via crafted XML data to the (1)
    xmlParseEntityDecl or (2) xmlParseConditionalSections function in
    parser.c, as demonstrated by non-terminated entities.
    CVE-2015-7942
    The xmlParseConditionalSections function in parser.c in libxml2 does
    not properly skip intermediary entities when it stops parsing invalid
    input, which allows context-dependent attackers to cause a denial of
    service (out-of-bounds read and crash) via crafted XML data, a
    different vulnerability than CVE-2015-7941.
    CVE-2015-8241
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-8242
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.
    CVE-2015-8317
    ** RESERVED **
    This candidate has been reserved by an organization or individual that
    will use it when announcing a new security problem.  When the
    candidate has been publicized, the details for this candidate will be
    provided.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

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://tsn.miraclelinux.com/en/node/6312");
  script_set_attribute(attribute:"solution", value:
"Update the affected libxml2, libxml2-devel and / or libxml2-python packages.");
  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:N/AC:L/PR:N/UI:N/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-2015-7942");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2015-8317");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/12/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:miracle:linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:miracle:linux:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Miracle Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'MIRACLE LINUX' >!< os_product) audit(AUDIT_OS_NOT, 'MIRACLE LINUX');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'MIRACLE LINUX');
if (! preg(pattern:"^7([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'MiracleLinux 7.x', 'MIRACLE LINUX ' + os_version);

if (!get_kb_item('Host/MiracleLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

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

var constraints = [
  {
    'release': '7',
    'pkgs': [
      {'reference':'libxml2-2.9.1-6.0.1.el7.AXS7.2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libxml2-2.9.1-6.0.1.el7.AXS7.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libxml2-devel-2.9.1-6.0.1.el7.AXS7.2', 'cpu':'i686', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libxml2-devel-2.9.1-6.0.1.el7.AXS7.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libxml2-python-2.9.1-6.0.1.el7.AXS7.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) 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, 'libxml2 / libxml2-devel / libxml2-python');
}