Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : U-Boot vulnerabilities (USN-5764-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5764-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(168465);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/16");

  script_cve_id(
    "CVE-2022-2347",
    "CVE-2022-30552",
    "CVE-2022-30767",
    "CVE-2022-30790",
    "CVE-2022-33103",
    "CVE-2022-33967",
    "CVE-2022-34835"
  );
  script_xref(name:"USN", value:"5764-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : U-Boot vulnerabilities (USN-5764-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 22.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-5764-1 advisory.

  - There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length
    field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to
    the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a
    `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.
    (CVE-2022-2347)

  - Das U-Boot 2022.01 has a Buffer Overflow. (CVE-2022-30552)

  - nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded
    memcpy with a failed length check, leading to a buffer overflow. NOTE: this issue exists because of an
    incorrect fix for CVE-2019-14196. (CVE-2022-30767)

  - Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552. (CVE-2022-30790)

  - Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function
    sqfs_readdir(). (CVE-2022-33103)

  - squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-
    based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially
    crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.
    (CVE-2022-33967)

  - In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow
    in the i2c md command enables the corruption of the return address pointer of the do_i2c_md function.
    (CVE-2022-34835)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-5764-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:L/PR:N/UI:N/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-2022-34835");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-amlogic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-exynos");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-imx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-microchip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-mvebu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-qcom");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-rockchip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-rpi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-sifive");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-sunxi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-tegra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:u-boot-tools");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '18.04', 'pkgname': 'u-boot', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-amlogic', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-exynos', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-imx', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-mvebu', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-qcom', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-qemu', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-rockchip', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-rpi', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-sunxi', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-tegra', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '18.04', 'pkgname': 'u-boot-tools', 'pkgver': '2020.10+dfsg-1ubuntu0~18.04.3'},
    {'osver': '20.04', 'pkgname': 'u-boot', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-amlogic', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-exynos', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-imx', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-mvebu', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-qcom', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-qemu', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-rockchip', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-rpi', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-sifive', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-sunxi', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-tegra', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '20.04', 'pkgname': 'u-boot-tools', 'pkgver': '2021.01+dfsg-3ubuntu0~20.04.5'},
    {'osver': '22.04', 'pkgname': 'u-boot', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-amlogic', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-exynos', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-imx', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-microchip', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-mvebu', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-qcom', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-qemu', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-rockchip', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-rpi', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-sifive', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-sunxi', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-tegra', 'pkgver': '2022.01+dfsg-2ubuntu2.3'},
    {'osver': '22.04', 'pkgname': 'u-boot-tools', 'pkgver': '2022.01+dfsg-2ubuntu2.3'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'u-boot / u-boot-amlogic / u-boot-exynos / u-boot-imx / etc');
}