Ubuntu 16.04 LTS : Ceph vulnerabilities (USN-4035-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4035-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(126255);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2018-14662",
    "CVE-2018-16846",
    "CVE-2018-16889",
    "CVE-2019-3821"
  );
  script_xref(name:"USN", value:"4035-1");

  script_name(english:"Ubuntu 16.04 LTS : Ceph vulnerabilities (USN-4035-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that Ceph incorrectly handled read only permissions.
An authenticated attacker could use this issue to obtain dm-crypt
encryption keys. This issue only affected Ubuntu 16.04 LTS.
(CVE-2018-14662)

It was discovered that Ceph incorrectly handled certain OMAPs holding
bucket indices. An authenticated attacker could possibly use this
issue to cause a denial of service. This issue only affected Ubuntu
16.04 LTS. (CVE-2018-16846)

It was discovered that Ceph incorrectly sanitized certain debug logs.
A local attacker could possibly use this issue to obtain encryption
key information. This issue was only addressed in Ubuntu 18.10 and
Ubuntu 19.04. (CVE-2018-16889)

It was discovered that Ceph incorrectly handled certain civetweb
requests. A remote attacker could possibly use this issue to consume
resources, leading to a denial of service. This issue only affected
Ubuntu 18.10 and Ubuntu 19.04. (CVE-2019-3821).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-4035-1");
  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:N/A:N");
  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:N/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-2018-16889");

  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:"2019/01/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/06/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/06/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-fs-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-fuse");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-mds");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-resource-agents");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ceph-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcephfs-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcephfs-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcephfs-jni");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcephfs1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librados-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librados2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libradosstriper-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libradosstriper1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librbd-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librbd1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librgw-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librgw2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-ceph");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-cephfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-rados");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:radosgw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:rbd-fuse");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:rbd-mirror");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:rbd-nbd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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) 2019-2023 Canonical, Inc. / NASL script (C) 2019-2023 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 (! ('16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', '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': 'ceph', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-common', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-fs-common', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-fuse', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-mds', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-resource-agents', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'ceph-test', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libcephfs-dev', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libcephfs-java', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libcephfs-jni', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libcephfs1', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librados-dev', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librados2', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libradosstriper-dev', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'libradosstriper1', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librbd-dev', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librbd1', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librgw-dev', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'librgw2', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'python-ceph', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'python-cephfs', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'python-rados', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'python-rbd', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'radosgw', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'rbd-fuse', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'rbd-mirror', 'pkgver': '10.2.11-0ubuntu0.16.04.2'},
    {'osver': '16.04', 'pkgname': 'rbd-nbd', 'pkgver': '10.2.11-0ubuntu0.16.04.2'}
];

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_WARNING,
    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, 'ceph / ceph-common / ceph-fs-common / ceph-fuse / ceph-mds / etc');
}