EulerOS 2.0 SP2 : cyrus-sasl (EulerOS-SA-2020-1631)

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

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

if (description)
{
  script_id(137473);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/07");

  script_cve_id("CVE-2019-19906");

  script_name(english:"EulerOS 2.0 SP2 : cyrus-sasl (EulerOS-SA-2020-1631)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the cyrus-sasl packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerability :

  - cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds
    write leading to unauthenticated remote
    denial-of-service in OpenLDAP via a malformed LDAP
    packet. The OpenLDAP crash is ultimately caused by an
    off-by-one error in _sasl_add_string in common.c in
    cyrus-sasl.(CVE-2019-19906)

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-2020-1631
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7e480b87");
  script_set_attribute(attribute:"solution", value:
"Update the affected cyrus-sasl package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2019-19906");

  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:"2020/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-md5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-plain");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:cyrus-sasl-scram");
  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) 2020-2024 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 = ["cyrus-sasl-2.1.26-20.h1",
        "cyrus-sasl-devel-2.1.26-20.h1",
        "cyrus-sasl-gssapi-2.1.26-20.h1",
        "cyrus-sasl-lib-2.1.26-20.h1",
        "cyrus-sasl-md5-2.1.26-20.h1",
        "cyrus-sasl-plain-2.1.26-20.h1",
        "cyrus-sasl-scram-2.1.26-20.h1"];

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, "cyrus-sasl");
}