EulerOS Virtualization for ARM 64 3.0.6.0 : glibc (EulerOS-SA-2020-1330)

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

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

if (description)
{
  script_id(135117);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/20");

  script_cve_id("CVE-2018-20796", "CVE-2019-9192");

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.6.0 : glibc (EulerOS-SA-2020-1330)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the glibc packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerabilities :

  - ** DISPUTED ** In the GNU C Library (aka glibc or
    libc6) through 2.29, check_dst_limits_calc_pos_1 in
    posix/regexec.c has Uncontrolled Recursion, as
    demonstrated by '(|)(\\1\\1)*' in grep, a different
    issue than CVE-2018-20796. NOTE: the software
    maintainer disputes that this is a vulnerability
    because the behavior occurs only with a crafted
    pattern.(CVE-2019-9192)

  - In the GNU C Library (aka glibc or libc6) through 2.29,
    check_dst_limits_calc_pos_1 in posix/regexec.c has
    Uncontrolled Recursion, as demonstrated by
    '(\227|)(\\1\\1|t1|\\\2537)+' in grep.(CVE-2018-20796)

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-2020-1330
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9503377d");
  script_set_attribute(attribute:"solution", value:
"Update the affected glibc packages.");
  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-2019-9192");

  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:"2020/04/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-all-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libnsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nscd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.6.0");
  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/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "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");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.6.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.6.0");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["glibc-2.28-9.h35.eulerosv2r8",
        "glibc-all-langpacks-2.28-9.h35.eulerosv2r8",
        "glibc-common-2.28-9.h35.eulerosv2r8",
        "glibc-devel-2.28-9.h35.eulerosv2r8",
        "glibc-headers-2.28-9.h35.eulerosv2r8",
        "libnsl-2.28-9.h35.eulerosv2r8",
        "nscd-2.28-9.h35.eulerosv2r8"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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, "glibc");
}