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nessusThis script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.EULEROS_SA-2018-1306.NASL
HistorySep 27, 2018 - 12:00 a.m.

EulerOS 2.0 SP2 : openssl110f (EulerOS-SA-2018-1306)

2018-09-2700:00:00
This script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
10

According to the versions of the openssl110f packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  • During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack.(CVE-2017-0732)

  • OpenSSL RSA key generation was found to be vulnerable to cache side-channel attacks. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover parts of the private key.(CVE-2018-0737)

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.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(117749);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/03");

  script_cve_id("CVE-2018-0732", "CVE-2018-0737");

  script_name(english:"EulerOS 2.0 SP2 : openssl110f (EulerOS-SA-2018-1306)");

  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 :

  - During key agreement in a TLS handshake using a DH(E)
    based ciphersuite a malicious server can send a very
    large prime value to the client. This will cause the
    client to spend an unreasonably long period of time
    generating a key for this prime resulting in a hang
    until the client has finished. This could be exploited
    in a Denial Of Service attack.(CVE-2017-0732)

  - OpenSSL RSA key generation was found to be vulnerable
    to cache side-channel attacks. An attacker with
    sufficient access to mount cache timing attacks during
    the RSA key generation process could recover parts of
    the private key.(CVE-2018-0737)

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-2018-1306
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9138ba58");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-0737");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/27");

  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) 2018-2022 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.h7",
        "openssl110f-devel-1.1.0f-5.h7",
        "openssl110f-libs-1.1.0f-5.h7"];

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");
}
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