Vulnerabilities > CVE-2019-1563 - Information Exposure Through Discrepancy vulnerability in Openssl

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

include("compat.inc");

if (description)
{
  script_id(131584);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id(
    "CVE-2018-0734",
    "CVE-2018-5407",
    "CVE-2019-1547",
    "CVE-2019-1563"
  );

  script_name(english:"EulerOS 2.0 SP2 : openssl110f (EulerOS-SA-2019-2430)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the openssl110f packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - The OpenSSL DSA signature algorithm has been shown to
    be vulnerable to a timing side channel attack. An
    attacker could use variations in the signing algorithm
    to recover the private key. Fixed in OpenSSL 1.1.1a
    (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected
    1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected
    1.0.2-1.0.2p).(CVE-2018-0734)

  - Simultaneous Multi-threading (SMT) in processors can
    enable local users to exploit software vulnerable to
    timing attacks via a side-channel timing attack on
    'port contention'.(CVE-2018-5407)

  - Normally in OpenSSL EC groups always have a co-factor
    present and this is used in side channel resistant code
    paths. However, in some cases, it is possible to
    construct a group using explicit parameters (instead of
    using a named curve). In those cases it is possible
    that such a group does not have the cofactor present.
    This can occur even where all the parameters match a
    known named curve. If such a curve is used then OpenSSL
    falls back to non-side channel resistant code paths
    which may result in full key recovery during an ECDSA
    signature operation. In order to be vulnerable an
    attacker would have to have the ability to time the
    creation of a large number of signatures where explicit
    parameters with no co-factor present are in use by an
    application using libcrypto. For the avoidance of doubt
    libssl is not vulnerable because explicit parameters
    are never used. Fixed in OpenSSL 1.1.1d (Affected
    1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected
    1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected
    1.0.2-1.0.2s).(CVE-2019-1547)

  - In situations where an attacker receives automated
    notification of the success or failure of a decryption
    attempt an attacker, after sending a very large number
    of messages to be decrypted, can recover a CMS/PKCS7
    transported encryption key or decrypt any RSA encrypted
    message that was encrypted with the public RSA key,
    using a Bleichenbacher padding oracle attack.
    Applications are not affected if they use a certificate
    together with the private RSA key to the CMS_decrypt or
    PKCS7_decrypt functions to select the correct recipient
    info to decrypt. Fixed in OpenSSL 1.1.1d (Affected
    1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected
    1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected
    1.0.2-1.0.2s).(CVE-2019-1563)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2430
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c75fc767");
  script_set_attribute(attribute:"solution", value:
"Update the affected openssl110f packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1563");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl110f");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl110f-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl110f-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["openssl110f-1.1.0f-5.h11",
        "openssl110f-devel-1.1.0f-5.h11",
        "openssl110f-libs-1.1.0f-5.h11"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "openssl110f");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4376-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(136967);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/05");

  script_cve_id("CVE-2019-1547", "CVE-2019-1549", "CVE-2019-1551", "CVE-2019-1563");
  script_xref(name:"USN", value:"4376-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : openssl vulnerabilities (USN-4376-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Cesar Pereida Garcia, Sohaib ul Hassan, Nicola Tuveri, Iaroslav
Gridin, Alejandro Cabrera Aldaya, and Billy Brumley discovered that
OpenSSL incorrectly handled ECDSA signatures. An attacker could
possibly use this issue to perform a timing side-channel attack and
recover private ECDSA keys. (CVE-2019-1547)

Matt Caswell discovered that OpenSSL incorrectly handled the random
number generator (RNG). This may result in applications that use the
fork() system call sharing the same RNG state between the parent and
the child, contrary to expectations. This issue only affected Ubuntu
18.04 LTS and Ubuntu 19.10. (CVE-2019-1549)

Guido Vranken discovered that OpenSSL incorrectly performed the x86_64
Montgomery squaring procedure. While unlikely, a remote attacker could
possibly use this issue to recover private keys. (CVE-2019-1551)

Bernd Edlinger discovered that OpenSSL incorrectly handled certain
decryption functions. In certain scenarios, a remote attacker could
possibly use this issue to perform a padding oracle attack and decrypt
traffic. (CVE-2019-1563).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/4376-1/"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected libssl1.0.0 and / or libssl1.1 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl1.0.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl1.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(16\.04|18\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"libssl1.0.0", pkgver:"1.0.2g-1ubuntu4.16")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"libssl1.1", pkgver:"1.1.1-1ubuntu2.1~18.04.6")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"libssl1.1", pkgver:"1.1.1c-1ubuntu4.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libssl1.0.0 / libssl1.1");
}