Vulnerabilities > CVE-2016-0799 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2016-294.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(89651);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2013-0166", "CVE-2013-0169", "CVE-2014-0076", "CVE-2014-0195", "CVE-2014-0221", "CVE-2014-0224", "CVE-2014-3470", "CVE-2014-3505", "CVE-2014-3506", "CVE-2014-3507", "CVE-2014-3508", "CVE-2014-3510", "CVE-2014-3566", "CVE-2014-3567", "CVE-2014-3568", "CVE-2014-3569", "CVE-2014-3570", "CVE-2014-3571", "CVE-2014-3572", "CVE-2014-8275", "CVE-2015-0204", "CVE-2015-0209", "CVE-2015-0286", "CVE-2015-0287", "CVE-2015-0288", "CVE-2015-0289", "CVE-2015-0293", "CVE-2015-1788", "CVE-2015-1789", "CVE-2015-1790", "CVE-2015-1791", "CVE-2015-1792", "CVE-2015-3195", "CVE-2015-3197", "CVE-2016-0797", "CVE-2016-0799", "CVE-2016-0800");

  script_name(english:"openSUSE Security Update : libopenssl0_9_8 (openSUSE-2016-294) (DROWN) (FREAK) (POODLE)");
  script_summary(english:"Check for the openSUSE-2016-294 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for libopenssl0_9_8 fixes the following issues :

  - CVE-2016-0800 aka the 'DROWN' attack (bsc#968046):
    OpenSSL was vulnerable to a cross-protocol attack that
    could lead to decryption of TLS sessions by using a
    server supporting SSLv2 and EXPORT cipher suites as a
    Bleichenbacher RSA padding oracle.

    This update changes the openssl library to :

  - Disable SSLv2 protocol support by default.

    This can be overridden by setting the environment
    variable 'OPENSSL_ALLOW_SSL2' or by using
    SSL_CTX_clear_options using the SSL_OP_NO_SSLv2 flag.

    Note that various services and clients had already
    disabled SSL protocol 2 by default previously.

  - Disable all weak EXPORT ciphers by default. These can be
    reenabled if required by old legacy software using the
    environment variable 'OPENSSL_ALLOW_EXPORT'.

  - CVE-2016-0797 (bnc#968048): The BN_hex2bn() and
    BN_dec2bn() functions had a bug that could result in an
    attempt to de-reference a NULL pointer leading to
    crashes. This could have security consequences if these
    functions were ever called by user applications with
    large untrusted hex/decimal data. Also, internal usage
    of these functions in OpenSSL uses data from config
    files or application command line arguments. If user
    developed applications generated config file data based
    on untrusted data, then this could have had security
    consequences as well.

  - CVE-2016-0799 (bnc#968374) On many 64 bit systems, the
    internal fmtstr() and doapr_outch() functions could
    miscalculate the length of a string and attempt to
    access out-of-bounds memory locations. These problems
    could have enabled attacks where large amounts of
    untrusted data is passed to the BIO_*printf functions.
    If applications use these functions in this way then
    they could have been vulnerable. OpenSSL itself uses
    these functions when printing out human-readable dumps
    of ASN.1 data. Therefore applications that print this
    data could have been vulnerable if the data is from
    untrusted sources. OpenSSL command line applications
    could also have been vulnerable when they print out
    ASN.1 data, or if untrusted data is passed as command
    line arguments. Libssl is not considered directly
    vulnerable.

  - The package was updated to 0.9.8zh :

  - fixes many security vulnerabilities (not separately
    listed): CVE-2015-3195, CVE-2015-1788, CVE-2015-1789,
    CVE-2015-1790, CVE-2015-1792, CVE-2015-1791,
    CVE-2015-0286, CVE-2015-0287, CVE-2015-0289,
    CVE-2015-0293, CVE-2015-0209, CVE-2015-0288,
    CVE-2014-3571, CVE-2014-3569, CVE-2014-3572,
    CVE-2015-0204, CVE-2014-8275, CVE-2014-3570,
    CVE-2014-3567, CVE-2014-3568, CVE-2014-3566,
    CVE-2014-3510, CVE-2014-3507, CVE-2014-3506,
    CVE-2014-3505, CVE-2014-3508, CVE-2014-0224,
    CVE-2014-0221, CVE-2014-0195, CVE-2014-3470,
    CVE-2014-0076, CVE-2013-0169, CVE-2013-0166

  - avoid running OPENSSL_config twice. This avoids breaking
    engine loading. (boo#952871, boo#967787)

  - fix CVE-2015-3197 (boo#963415)

  - SSLv2 doesn't block disabled ciphers"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=952871"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=963415"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=967787"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=968046"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=968048"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=968374"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libopenssl0_9_8 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libopenssl0_9_8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libopenssl0_9_8-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libopenssl0_9_8-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libopenssl0_9_8-debuginfo-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libopenssl0_9_8-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:13.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/03");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE13\.2|SUSE42\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "13.2 / 42.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE13.2", reference:"libopenssl0_9_8-0.9.8zh-9.3.1") ) flag++;
if ( rpm_check(release:"SUSE13.2", reference:"libopenssl0_9_8-debuginfo-0.9.8zh-9.3.1") ) flag++;
if ( rpm_check(release:"SUSE13.2", reference:"libopenssl0_9_8-debugsource-0.9.8zh-9.3.1") ) flag++;
if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"libopenssl0_9_8-32bit-0.9.8zh-9.3.1") ) flag++;
if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"libopenssl0_9_8-debuginfo-32bit-0.9.8zh-9.3.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"libopenssl0_9_8-0.9.8zh-14.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"libopenssl0_9_8-debuginfo-0.9.8zh-14.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"libopenssl0_9_8-debugsource-0.9.8zh-14.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", cpu:"x86_64", reference:"libopenssl0_9_8-32bit-0.9.8zh-14.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", cpu:"x86_64", reference:"libopenssl0_9_8-debuginfo-32bit-0.9.8zh-14.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libopenssl0_9_8 / libopenssl0_9_8-32bit / libopenssl0_9_8-debuginfo / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2016:0996 and 
# Oracle Linux Security Advisory ELSA-2016-0996 respectively.
#

include("compat.inc");

if (description)
{
  script_id(91152);
  script_version("2.10");
  script_cvs_date("Date: 2019/09/27 13:00:37");

  script_cve_id("CVE-2016-0799", "CVE-2016-2105", "CVE-2016-2106", "CVE-2016-2107", "CVE-2016-2108", "CVE-2016-2109", "CVE-2016-2842");
  script_xref(name:"RHSA", value:"2016:0996");

  script_name(english:"Oracle Linux 6 : openssl (ELSA-2016-0996)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2016:0996 :

An update for openssl is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security
impact of Important. 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.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL)
and Transport Layer Security (TLS) protocols, as well as a
full-strength general-purpose cryptography library.

Security Fix(es) :

* A flaw was found in the way OpenSSL encoded certain ASN.1 data
structures. An attacker could use this flaw to create a specially
crafted certificate which, when verified or re-encoded by OpenSSL,
could cause it to crash, or execute arbitrary code using the
permissions of the user running an application compiled against the
OpenSSL library. (CVE-2016-2108)

* Two integer overflow flaws, leading to buffer overflows, were found
in the way the EVP_EncodeUpdate() and EVP_EncryptUpdate() functions of
OpenSSL parsed very large amounts of input data. A remote attacker
could use these flaws to crash an application using OpenSSL or,
possibly, execute arbitrary code with the permissions of the user
running that application. (CVE-2016-2105, CVE-2016-2106)

* It was discovered that OpenSSL leaked timing information when
decrypting TLS/SSL and DTLS protocol encrypted records when the
connection used the AES CBC cipher suite and the server supported
AES-NI. A remote attacker could possibly use this flaw to retrieve
plain text from encrypted packets by using a TLS/SSL or DTLS server as
a padding oracle. (CVE-2016-2107)

* Several flaws were found in the way BIO_*printf functions were
implemented in OpenSSL. Applications which passed large amounts of
untrusted data through these functions could crash or potentially
execute code with the permissions of the user running such an
application. (CVE-2016-0799, CVE-2016-2842)

* A denial of service flaw was found in the way OpenSSL parsed certain
ASN.1-encoded data from BIO (OpenSSL's I/O abstraction) inputs. An
application using OpenSSL that accepts untrusted ASN.1 BIO input could
be forced to allocate an excessive amount of data. (CVE-2016-2109)

Red Hat would like to thank the OpenSSL project for reporting
CVE-2016-2108, CVE-2016-2842, CVE-2016-2105, CVE-2016-2106,
CVE-2016-2107, and CVE-2016-0799. Upstream acknowledges Huzaifa
Sidhpurwala (Red Hat), Hanno Bock, and David Benjamin (Google) as the
original reporters of CVE-2016-2108; Guido Vranken as the original
reporter of CVE-2016-2842, CVE-2016-2105, CVE-2016-2106, and
CVE-2016-0799; and Juraj Somorovsky as the original reporter of
CVE-2016-2107."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2016-May/006053.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssl packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"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:oracle:linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssl-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/16");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/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, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"openssl-1.0.1e-48.el6_8.1")) flag++;
if (rpm_check(release:"EL6", reference:"openssl-devel-1.0.1e-48.el6_8.1")) flag++;
if (rpm_check(release:"EL6", reference:"openssl-perl-1.0.1e-48.el6_8.1")) flag++;
if (rpm_check(release:"EL6", reference:"openssl-static-1.0.1e-48.el6_8.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssl / openssl-devel / openssl-perl / openssl-static");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2016-2802690366.
#

include("compat.inc");

if (description)
{
  script_id(89499);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2016-0702", "CVE-2016-0705", "CVE-2016-0799");
  script_xref(name:"FEDORA", value:"2016-2802690366");

  script_name(english:"Fedora 23 : openssl-1.0.2g-2.fc23 (2016-2802690366)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New upstream release fixing security issues. Note that SSLv2 was
already disabled by default in Fedora OpenSSL.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1310596"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1310599"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1312219"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9b0c58f2"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssl package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:openssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:23");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^23([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 23.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/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, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC23", reference:"openssl-1.0.2g-2.fc23")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssl");
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(90684);
  script_version("1.18");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id(
    "CVE-2015-3197",
    "CVE-2016-0639",
    "CVE-2016-0642",
    "CVE-2016-0643",
    "CVE-2016-0647",
    "CVE-2016-0648",
    "CVE-2016-0655",
    "CVE-2016-0657",
    "CVE-2016-0659",
    "CVE-2016-0662",
    "CVE-2016-0666",
    "CVE-2016-0667",
    "CVE-2016-0702",
    "CVE-2016-0705",
    "CVE-2016-0797",
    "CVE-2016-0798",
    "CVE-2016-0799",
    "CVE-2016-0800",
    "CVE-2016-2047",
    "CVE-2017-10378"
  );
  script_bugtraq_id(
    81810,
    82237,
    83705,
    83733,
    83754,
    83755,
    83763,
    86418,
    86424,
    86433,
    86445,
    86457,
    86484,
    86486,
    86493,
    86495,
    86506,
    86509,
    101375
  );
  script_xref(name:"CERT", value:"257823");
  script_xref(name:"CERT", value:"583776");

  script_name(english:"MySQL 5.7.x < 5.7.12 Multiple Vulnerabilities (DROWN)");
  script_summary(english:"Checks the version of MySQL server.");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of MySQL running on the remote host is 5.7.x prior to
5.7.12. It is, therefore, affected by multiple vulnerabilities :

  - A cipher algorithm downgrade vulnerability exists in the
    bundled version of OpenSSL due to a flaw that is
    triggered when handling cipher negotiation. A remote
    attacker can exploit this to negotiate SSLv2 ciphers and
    complete SSLv2 handshakes even if all SSLv2 ciphers have
    been disabled on the server. Note that this
    vulnerability only exists if the SSL_OP_NO_SSLv2 option
    has not been disabled. (CVE-2015-3197)

  - An unspecified flaw exists in the Pluggable
    Authentication subcomponent that allows an
    unauthenticated, remote attacker to execute arbitrary
    code. (CVE-2016-0639)

  - An unspecified flaw exists in the Federated subcomponent
    that allows an authenticated, remote attacker to impact
    integrity and availability. (CVE-2016-0642)

  - An unspecified flaw exists in the DML subcomponent that
    allows an authenticated, remote attacker to disclose
    sensitive information. (CVE-2016-0643)

  - An unspecified flaw exists in the FTS subcomponent that
    allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0647)

  - An unspecified flaw exists in the PS subcomponent that
    allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0647)

  - An unspecified flaw exists in the InnoDB subcomponent
    that allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0655)

  - An unspecified flaw exists in the JSON subcomponent that
    allows an authenticated, remote attacker to disclose
    sensitive information. (CVE-2016-0657)

  - An unspecified flaw exists in the Optimizer subcomponent
    that allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0659)

  - An unspecified flaw exists in the Partition subcomponent
    that allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0662)

  - An unspecified flaw exists in the Security: Privileges
    subcomponent that allows an authenticated, remote
    attacker to cause a denial of service condition.
    (CVE-2016-0666)

  - An unspecified flaw exists in the Locking subcomponent
    that allows an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2016-0667)

  - A key disclosure vulnerability exists in the bundled
    version of OpenSSL due to improper handling of
    cache-bank conflicts on the Intel Sandy-bridge
    microarchitecture. An attacker can exploit this to gain
    access to RSA key information. (CVE-2016-0702)

  - A double-free error exists in the bundled version of
    OpenSSL due to improper validation of user-supplied
    input when parsing malformed DSA private keys. A remote
    attacker can exploit this to corrupt memory, resulting
    in a denial of service condition or the execution of
    arbitrary code. (CVE-2016-0705)

  - A NULL pointer dereference flaw exists in the bundled
    version of OpenSSL in the BN_hex2bn() and BN_dec2bn()
    functions. A remote attacker can exploit this to trigger
    a heap corruption, resulting in the execution of
    arbitrary code. (CVE-2016-0797)

  - A denial of service vulnerability exists in the bundled
    version of OpenSSL due to improper handling of invalid
    usernames. A remote attacker can exploit this, via a
    specially crafted username, to leak 300 bytes of memory
    per connection, exhausting available memory resources.
    (CVE-2016-0798)

  - Multiple memory corruption issues exist in the bundled
    version of OpenSSL that allow a remote attacker to cause
    a denial of service condition or the execution of
    arbitrary code. (CVE-2016-0799)

  - A flaw exists in the bundled version of OpenSSL that
    allows a cross-protocol Bleichenbacher padding oracle
    attack known as DROWN (Decrypting RSA with Obsolete and
    Weakened eNcryption). This vulnerability exists due to a
    flaw in the Secure Sockets Layer Version 2 (SSLv2)
    implementation, and it allows captured TLS traffic to be
    decrypted. A man-in-the-middle attacker can exploit this
    to decrypt the TLS connection by utilizing previously
    captured traffic and weak cryptography along with a
    series of specially crafted connections to an SSLv2
    server that uses the same private key. (CVE-2016-0800)

  - A man-in-the-middle spoofing vulnerability exists due to
    the server hostname not being verified to match a domain
    name in the Subject's Common Name (CN) or SubjectAltName
    field of the X.509 certificate. A man-in-the-middle
    attacker can exploit this, by spoofing the TLS/SSL
    server via a certificate that appears valid, to disclose
    sensitive information or manipulate transmitted data.
    (CVE-2016-2047)

  - An unspecified flaw exists in the Optimizer subcomponent
    that allow an authenticated, remote attacker to cause a
    denial of service condition. (CVE-2017-10378)

  - A flaw exists related to certificate validation due to
    the server hostname not being verified to match a domain
    name in the X.509 certificate. A man-in-the-middle
    attacker can exploit this, by spoofing the TLS/SSL
    server via a certificate that appears valid, to disclose
    sensitive information or manipulate data.

  - An integer overflow condition exists that is triggered
    due to improper validation of user-supplied input when
    processing client handshakes. An authenticated, remote
    attacker can exploit this to cause the server to exit,
    resulting in a denial of service condition.

  - An information disclosure vulnerability exists due to
    overly verbose error messages returning part of the SQL
    statement that produced them. An authenticated, remote
    attacker can exploit this to disclose sensitive
    information.

  - A flaw exists in InnoDB that is triggered during the
    handling of an ALTER TABLE or ADD COLUMN operation on a
    table with virtual columns. An authenticated, remote
    attacker can exploit this to crash the server, resulting
    in a denial of service condition.");
  # https://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ffb7b96f");
  # http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1e07fa0e");
  script_set_attribute(attribute:"see_also", value:"https://support.oracle.com/rs?type=doc&id=2307762.1");
  # https://www.oracle.com/ocom/groups/public/@otn/documents/webcontent/3937099.xml
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8e9f2a38");
  script_set_attribute(attribute:"see_also", value:"https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-12.html");
  script_set_attribute(attribute:"see_also", value:"https://drownattack.com/");
  script_set_attribute(attribute:"see_also", value:"https://www.drownattack.com/drown-attack-paper.pdf");
  script_set_attribute(attribute:"solution", value:
"Upgrade to MySQL version 5.7.12 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-0799");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/11/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/22");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:mysql");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Databases");

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mysql_version.nasl", "mysql_login.nasl");
  script_require_keys("Settings/ParanoidReport");
  script_require_ports("Services/mysql", 3306);

  exit(0);
}

include("mysql_version.inc");

mysql_check_version(fixed:'5.7.12', min:'5.7', severity:SECURITY_HOLE);

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2016:0722 and 
# CentOS Errata and Security Advisory 2016:0722 respectively.
#

include("compat.inc");

if (description)
{
  script_id(91017);
  script_version("2.17");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2016-0799", "CVE-2016-2105", "CVE-2016-2106", "CVE-2016-2107", "CVE-2016-2108", "CVE-2016-2109", "CVE-2016-2842");
  script_xref(name:"RHSA", value:"2016:0722");

  script_name(english:"CentOS 7 : openssl (CESA-2016:0722)");
  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 openssl is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Important. 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.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL)
and Transport Layer Security (TLS) protocols, as well as a
full-strength general-purpose cryptography library.

Security Fix(es) :

* A flaw was found in the way OpenSSL encoded certain ASN.1 data
structures. An attacker could use this flaw to create a specially
crafted certificate which, when verified or re-encoded by OpenSSL,
could cause it to crash, or execute arbitrary code using the
permissions of the user running an application compiled against the
OpenSSL library. (CVE-2016-2108)

* Two integer overflow flaws, leading to buffer overflows, were found
in the way the EVP_EncodeUpdate() and EVP_EncryptUpdate() functions of
OpenSSL parsed very large amounts of input data. A remote attacker
could use these flaws to crash an application using OpenSSL or,
possibly, execute arbitrary code with the permissions of the user
running that application. (CVE-2016-2105, CVE-2016-2106)

* It was discovered that OpenSSL leaked timing information when
decrypting TLS/SSL and DTLS protocol encrypted records when the
connection used the AES CBC cipher suite and the server supported
AES-NI. A remote attacker could possibly use this flaw to retrieve
plain text from encrypted packets by using a TLS/SSL or DTLS server as
a padding oracle. (CVE-2016-2107)

* Several flaws were found in the way BIO_*printf functions were
implemented in OpenSSL. Applications which passed large amounts of
untrusted data through these functions could crash or potentially
execute code with the permissions of the user running such an
application. (CVE-2016-0799, CVE-2016-2842)

* A denial of service flaw was found in the way OpenSSL parsed certain
ASN.1-encoded data from BIO (OpenSSL's I/O abstraction) inputs. An
application using OpenSSL that accepts untrusted ASN.1 BIO input could
be forced to allocate an excessive amount of data. (CVE-2016-2109)

Red Hat would like to thank the OpenSSL project for reporting
CVE-2016-2108, CVE-2016-2842, CVE-2016-2105, CVE-2016-2106,
CVE-2016-2107, and CVE-2016-0799. Upstream acknowledges Huzaifa
Sidhpurwala (Red Hat), Hanno Bock, and David Benjamin (Google) as the
original reporters of CVE-2016-2108; Guido Vranken as the original
reporter of CVE-2016-2842, CVE-2016-2105, CVE-2016-2106, and
CVE-2016-0799; and Juraj Somorovsky as the original reporter of
CVE-2016-2107."
  );
  # https://lists.centos.org/pipermail/centos-announce/2016-May/021860.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a8963b97"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssl packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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-2016-0799");
  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:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssl-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssl-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssl-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 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:"openssl-1.0.1e-51.el7_2.5")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssl-devel-1.0.1e-51.el7_2.5")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssl-libs-1.0.1e-51.el7_2.5")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssl-perl-1.0.1e-51.el7_2.5")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssl-static-1.0.1e-51.el7_2.5")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssl / openssl-devel / openssl-libs / openssl-perl / etc");
}