Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : gdb vulnerabilities (USN-6842-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6842-1. 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(200771);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/20");

  script_cve_id(
    "CVE-2022-4285",
    "CVE-2023-1972",
    "CVE-2023-39128",
    "CVE-2023-39129",
    "CVE-2023-39130"
  );
  script_xref(name:"USN", value:"6842-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : gdb vulnerabilities (USN-6842-1)");

  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 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-6842-1 advisory.

    It was discovered that gdb incorrectly handled certain memory operations when parsing an ELF file. An
    attacker could possibly use this issue to cause a denial of service. This issue is the result of an
    incomplete fix for CVE-2020-16599. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-4285)

    It was discovered that gdb incorrectly handled memory leading to a heap based buffer overflow. An attacker
    could use this

    issue to cause a denial of service, or possibly execute

    arbitrary code. This issue only affected Ubuntu 22.04 LTS.

    (CVE-2023-1972)

    It was discovered that gdb incorrectly handled memory leading to a stack overflow. An attacker could
    possibly use this issue to cause a denial of service. This issue only affected

    Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

    (CVE-2023-39128)

    It was discovered that gdb had a use after free vulnerability under certain circumstances. An attacker
    could use this to cause

    a denial of service or possibly execute arbitrary code. This issue

    only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS

    and Ubuntu 22.04 LTS. (CVE-2023-39129)

    It was discovered that gdb incorrectly handled memory leading to a

    heap based buffer overflow. An attacker could use this issue to cause a denial of service, or possibly
    execute arbitrary code. This issue

    only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-39130)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-6842-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:R/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-2023-1972");

  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:"2023/01/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/06/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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:gdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gdb-multiarch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gdb-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gdb64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gdbserver");
  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) 2024 Canonical, Inc. / NASL script (C) 2024 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 (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 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': '16.04', 'pkgname': 'gdb', 'pkgver': '7.11.1-0ubuntu1~16.5+esm1'},
    {'osver': '16.04', 'pkgname': 'gdb-multiarch', 'pkgver': '7.11.1-0ubuntu1~16.5+esm1'},
    {'osver': '16.04', 'pkgname': 'gdb-source', 'pkgver': '7.11.1-0ubuntu1~16.5+esm1'},
    {'osver': '16.04', 'pkgname': 'gdb64', 'pkgver': '7.11.1-0ubuntu1~16.5+esm1'},
    {'osver': '16.04', 'pkgname': 'gdbserver', 'pkgver': '7.11.1-0ubuntu1~16.5+esm1'},
    {'osver': '18.04', 'pkgname': 'gdb', 'pkgver': '8.1.1-0ubuntu1+esm1'},
    {'osver': '18.04', 'pkgname': 'gdb-multiarch', 'pkgver': '8.1.1-0ubuntu1+esm1'},
    {'osver': '18.04', 'pkgname': 'gdb-source', 'pkgver': '8.1.1-0ubuntu1+esm1'},
    {'osver': '18.04', 'pkgname': 'gdbserver', 'pkgver': '8.1.1-0ubuntu1+esm1'},
    {'osver': '20.04', 'pkgname': 'gdb', 'pkgver': '9.2-0ubuntu1~20.04.2'},
    {'osver': '20.04', 'pkgname': 'gdb-multiarch', 'pkgver': '9.2-0ubuntu1~20.04.2'},
    {'osver': '20.04', 'pkgname': 'gdb-source', 'pkgver': '9.2-0ubuntu1~20.04.2'},
    {'osver': '20.04', 'pkgname': 'gdbserver', 'pkgver': '9.2-0ubuntu1~20.04.2'},
    {'osver': '22.04', 'pkgname': 'gdb', 'pkgver': '12.1-0ubuntu1~22.04.2'},
    {'osver': '22.04', 'pkgname': 'gdb-multiarch', 'pkgver': '12.1-0ubuntu1~22.04.2'},
    {'osver': '22.04', 'pkgname': 'gdb-source', 'pkgver': '12.1-0ubuntu1~22.04.2'},
    {'osver': '22.04', 'pkgname': 'gdbserver', 'pkgver': '12.1-0ubuntu1~22.04.2'}
];

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, 'gdb / gdb-multiarch / gdb-source / gdb64 / gdbserver');
}