Ubuntu 9.04 : ecryptfs-utils vulnerability (USN-783-1)

2009-06-09T00:00:00
ID UBUNTU_USN-783-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

Chris Jones discovered that the eCryptfs support utilities would report the mount passphrase into installation logs when an eCryptfs home directory was selected during Ubuntu installation. The logs are only readable by the root user, but this still left the mount passphrase unencrypted on disk, potentially leading to a loss of privacy.

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.

                                        
                                            #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-783-1. 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(39336);
  script_version("1.13");
  script_cvs_date("Date: 2019/08/02 13:33:02");

  script_cve_id("CVE-2009-1296");
  script_xref(name:"USN", value:"783-1");

  script_name(english:"Ubuntu 9.04 : ecryptfs-utils vulnerability (USN-783-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Chris Jones discovered that the eCryptfs support utilities would
report the mount passphrase into installation logs when an eCryptfs
home directory was selected during Ubuntu installation. The logs are
only readable by the root user, but this still left the mount
passphrase unencrypted on disk, potentially leading to a loss of
privacy.

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://usn.ubuntu.com/783-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected ecryptfs-utils, libecryptfs-dev and / or
libecryptfs0 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_cwe_id(200);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libecryptfs-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libecryptfs0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/06/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/06/09");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(9\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 9.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"9.04", pkgname:"ecryptfs-utils", pkgver:"73-0ubuntu6.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libecryptfs-dev", pkgver:"73-0ubuntu6.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"libecryptfs0", pkgver:"73-0ubuntu6.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ecryptfs-utils / libecryptfs-dev / libecryptfs0");
}