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nessusThis script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.EULEROS_SA-2021-1531.NASL
HistoryMar 04, 2021 - 12:00 a.m.

EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2021-1531)

2021-03-0400:00:00
This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
19

5.8 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

6.6 Medium

AI Score

Confidence

High

6.1 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:P/I:P/A:C

0.0004 Low

EPSS

Percentile

5.1%

According to the version of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  • A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.(CVE-2020-28915)

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(147043);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/16");

  script_cve_id("CVE-2020-28915");

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2021-1531)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the kernel packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerability :

  - A buffer over-read (at the framebuffer layer) in the
    fbcon code in the Linux kernel before 5.8.15 could be
    used by local attackers to read kernel memory, aka
    CID-6735b4632def.(CVE-2020-28915)

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-2021-1531
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?76c9a0ac");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-28915");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-perf");
  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) 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/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 = ["kernel-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "kernel-devel-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "kernel-headers-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "kernel-tools-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "kernel-tools-libs-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "kernel-tools-libs-devel-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "perf-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "python-perf-4.19.36-vhulk1907.1.0.h962.eulerosv2r8",
        "python3-perf-4.19.36-vhulk1907.1.0.h962.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, "kernel");
}
VendorProductVersionCPE
huaweieuleroskernelp-cpe:/a:huawei:euleros:kernel
huaweieuleroskernel-develp-cpe:/a:huawei:euleros:kernel-devel
huaweieuleroskernel-headersp-cpe:/a:huawei:euleros:kernel-headers
huaweieuleroskernel-toolsp-cpe:/a:huawei:euleros:kernel-tools
huaweieuleroskernel-tools-libsp-cpe:/a:huawei:euleros:kernel-tools-libs
huaweieuleroskernel-tools-libs-develp-cpe:/a:huawei:euleros:kernel-tools-libs-devel
huaweieulerosperfp-cpe:/a:huawei:euleros:perf
huaweieulerospython-perfp-cpe:/a:huawei:euleros:python-perf
huaweieulerospython3-perfp-cpe:/a:huawei:euleros:python3-perf
huaweieulerosuvpcpe:/o:huawei:euleros:uvp:3.0.6.0

5.8 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

6.6 Medium

AI Score

Confidence

High

6.1 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:P/I:P/A:C

0.0004 Low

EPSS

Percentile

5.1%