Vulnerabilities > CVE-2015-0287 - Code vulnerability in Openssl

#%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");
}