CentOS 7 : php (CESA-2016:2598)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2016:2598 and 
# CentOS Errata and Security Advisory 2016:2598 respectively.
#

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

if (description)
{
  script_id(95344);
  script_version("3.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2016-5399", "CVE-2016-5766", "CVE-2016-5767", "CVE-2016-5768");
  script_xref(name:"RHSA", value:"2016:2598");

  script_name(english:"CentOS 7 : php (CESA-2016:2598)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for php is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

PHP is an HTML-embedded scripting language commonly used with the
Apache HTTP Server.

Security Fix(es) :

* A flaw was found in the way certain error conditions were handled by
bzread () function in PHP. An attacker could use this flaw to upload a
specially crafted bz2 archive which, when parsed via the vulnerable
function, could cause the application to crash or execute arbitrary
code with the permissions of the user running the PHP application.
(CVE-2016-5399)

* An integer overflow flaw, leading to a heap-based buffer overflow
was found in the imagecreatefromgd2() function of PHP's gd extension.
A remote attacker could use this flaw to crash a PHP application or
execute arbitrary code with the privileges of the user running that
PHP application using gd via a specially crafted GD2 image.
(CVE-2016-5766)

* An integer overflow flaw, leading to a heap-based buffer overflow
was found in the gdImagePaletteToTrueColor() function of PHP's gd
extension. A remote attacker could use this flaw to crash a PHP
application or execute arbitrary code with the privileges of the user
running that PHP application using gd via a specially crafted image
buffer. (CVE-2016-5767)

* A double free flaw was found in the mb_ereg_replace_callback()
function of php which is used to perform regex search. This flaw could
possibly cause a PHP application to crash. (CVE-2016-5768)

Red Hat would like to thank Hans Jerry Illikainen for reporting
CVE-2016-5399.

Additional Changes :

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.3 Release Notes linked from the References section."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2016-November/003423.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c4bb77a1"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected php packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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-2016-5768");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-bcmath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-cli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-dba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-embedded");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-enchant");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-fpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-gd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-intl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-mbstring");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-mysqlnd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-odbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pdo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-process");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pspell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-recode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-soap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/08/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);

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


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-bcmath-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-cli-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-common-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-dba-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-devel-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-embedded-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-enchant-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-fpm-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-gd-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-intl-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-ldap-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-mbstring-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-mysql-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-mysqlnd-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-odbc-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-pdo-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-pgsql-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-process-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-pspell-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-recode-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-snmp-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-soap-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-xml-5.4.16-42.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"php-xmlrpc-5.4.16-42.el7")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "php / php-bcmath / php-cli / php-common / php-dba / php-devel / etc");
}