EulerOS 2.0 SP3 : binutils (EulerOS-SA-2021-1767)

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

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

if (description)
{
  script_id(149165);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/02");

  script_cve_id(
    "CVE-2017-14333",
    "CVE-2019-17450",
    "CVE-2020-16592",
    "CVE-2020-16598",
    "CVE-2020-35493",
    "CVE-2020-35494"
  );

  script_name(english:"EulerOS 2.0 SP3 : binutils (EulerOS-SA-2021-1767)");

  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 binutils packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - A Null Pointer Dereference vulnerability exists in the
    Binary File Descriptor (BFD) library (aka libbfd), as
    distributed in GNU Binutils 2.34, in
    debug_get_real_type, as demonstrated in objdump, that
    can cause a denial of service via a crafted
    file.(CVE-2020-16598)

  - A flaw exists in binutils in bfd/pef.c. An attacker who
    is able to submit a crafted PEF file to be parsed by
    objdump could cause a heap buffer overflow ->
    out-of-bounds read that could lead to an impact to
    application availability. This flaw affects binutils
    versions prior to 2.34.(CVE-2020-35493)

  - A use after free issue exists in the Binary File
    Descriptor (BFD) library (aka libbfd) in GNU Binutils
    2.34 in bfd_hash_lookup, as demonstrated in nm-new,
    that can cause a denial of service via a crafted
    file.(CVE-2020-16592)

  - find_abstract_instance in dwarf2.c in the Binary File
    Descriptor (BFD) library (aka libbfd), as distributed
    in GNU Binutils 2.32, allows remote attackers to cause
    a denial of service (infinite recursion and application
    crash) via a crafted ELF file.(CVE-2019-17450)

  - The process_version_sections function in readelf.c in
    GNU Binutils 2.29 allows attackers to cause a denial of
    service (Integer Overflow, and hang because of a
    time-consuming loop) or possibly have unspecified other
    impact via a crafted binary file with invalid values of
    ent.vn_next, during 'readelf -a'
    execution.(CVE-2017-14333)

  - There's a flaw in binutils /opcodes/tic4x-dis.c. An
    attacker who is able to submit a crafted input file to
    be processed by binutils could cause usage of
    uninitialized memory. The highest threat is to
    application availability with a lower threat to data
    confidentiality. This flaw affects binutils versions
    prior to 2.34.(CVE-2020-35494)

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-2021-1767
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6e8c690f");
  script_set_attribute(attribute:"solution", value:
"Update the affected binutils packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2020-35494");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2017-14333");

  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:"2021/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:binutils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:binutils-devel");
  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) 2021-2024 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 !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "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 = ["binutils-2.25.1-22.base.h46",
        "binutils-devel-2.25.1-22.base.h46"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"3", 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, "binutils");
}