EulerOS Virtualization 3.0.2.2 : glibc (EulerOS-SA-2020-1478)

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

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

if (description)
{
  script_id(135640);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/13");

  script_cve_id(
    "CVE-2016-1234",
    "CVE-2016-10739",
    "CVE-2017-12133",
    "CVE-2018-20796",
    "CVE-2019-9192"
  );

  script_name(english:"EulerOS Virtualization 3.0.2.2 : glibc (EulerOS-SA-2020-1478)");

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

  - In the GNU C Library (aka glibc or libc6) through 2.28,
    the getaddrinfo function would successfully parse a
    string that contained an IPv4 address followed by
    whitespace and arbitrary characters, which could lead
    applications to incorrectly assume that it had parsed a
    valid string, without the possibility of embedded HTTP
    headers or other potentially dangerous
    substrings.(CVE-2016-10739)

  - Stack-based buffer overflow in the glob implementation
    in GNU C Library (aka glibc) before 2.24, when
    GLOB_ALTDIRFUNC is used, allows context-dependent
    attackers to cause a denial of service (crash) via a
    long name.(CVE-2016-1234)

  - Use-after-free vulnerability in the clntudp_call
    function in sunrpc/clnt_udp.c in the GNU C Library (aka
    glibc or libc6) before 2.26 allows remote attackers to
    have unspecified impact via vectors related to error
    path.(CVE-2017-12133)

  - 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)

  - ** 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)

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-2020-1478
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a378493e");
  script_set_attribute(attribute:"solution", value:
"Update the affected glibc packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/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:H/PR:N/UI:N/S:U/C:N/I:H/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-2016-10739");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2017-12133");

  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:"2020/04/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/16");

  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-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:nscd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.2");
  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) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/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 != "3.0.2.2") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.2");
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 = ["glibc-2.17-222.h26.eulerosv2r7",
        "glibc-common-2.17-222.h26.eulerosv2r7",
        "glibc-devel-2.17-222.h26.eulerosv2r7",
        "glibc-headers-2.17-222.h26.eulerosv2r7",
        "nscd-2.17-222.h26.eulerosv2r7"];

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");
}