Vulnerabilities > CVE-2011-1835 - Credentials Management vulnerability in Ecryptfs Ecryptfs-Utils

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1188-1. 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(55810);
  script_version("1.10");
  script_cvs_date("Date: 2019/09/19 12:54:27");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1833", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1836", "CVE-2011-1837");
  script_xref(name:"USN", value:"1188-1");

  script_name(english:"Ubuntu 10.04 LTS / 10.10 / 11.04 : ecryptfs-utils vulnerabilities (USN-1188-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested mountpoint. A local attacker
could use this flaw to mount to arbitrary locations, leading to
privilege escalation. (CVE-2011-1831)

Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested mountpoint. A local attacker
could use this flaw to unmount to arbitrary locations, leading to a
denial of service. (CVE-2011-1832)

Vasiliy Kulikov and Dan Rosenberg discovered that eCryptfs incorrectly
validated permissions on the requested source directory. A local
attacker could use this flaw to mount an arbitrary directory, possibly
leading to information disclosure. A pending kernel update will
provide the other half of the fix for this issue. (CVE-2011-1833)

Dan Rosenberg and Marc Deslauriers discovered that eCryptfs
incorrectly handled modifications to the mtab file when an error
occurs. A local attacker could use this flaw to corrupt the mtab file,
and possibly unmount arbitrary locations, leading to a denial of
service. (CVE-2011-1834)

Marc Deslauriers discovered that eCryptfs incorrectly handled keys
when setting up an encrypted private directory. A local attacker could
use this flaw to manipulate keys during creation of a new user.
(CVE-2011-1835)

Marc Deslauriers discovered that eCryptfs incorrectly handled
permissions during recovery. A local attacker could use this flaw to
possibly access another user's data during the recovery process. This
issue only applied to Ubuntu 11.04. (CVE-2011-1836)

Vasiliy Kulikov discovered that eCryptfs incorrectly handled lock
counters. A local attacker could use this flaw to possibly overwrite
arbitrary files. The default symlink restrictions in Ubuntu 10.10 and
11.04 should protect against this issue. (CVE-2011-1837).

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/1188-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ecryptfs-utils package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");

  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:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/10/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/08/10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 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 (! preg(pattern:"^(10\.04|10\.10|11\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 10.10 / 11.04", "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:"10.04", pkgname:"ecryptfs-utils", pkgver:"83-0ubuntu3.2.10.04.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"ecryptfs-utils", pkgver:"83-0ubuntu3.2.10.10.1")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"ecryptfs-utils", pkgver:"87-0ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2011:1241 and 
# CentOS Errata and Security Advisory 2011:1241 respectively.
#

include("compat.inc");

if (description)
{
  script_id(56273);
  script_version("1.16");
  script_cvs_date("Date: 2019/10/25 13:36:06");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1833", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1837", "CVE-2011-3145");
  script_bugtraq_id(49108, 49287);
  script_xref(name:"RHSA", value:"2011:1241");

  script_name(english:"CentOS 5 : ecryptfs-utils (CESA-2011:1241)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated ecryptfs-utils packages that fix several security issues are
now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

eCryptfs is a stacked, cryptographic file system. It is transparent to
the underlying file system and provides per-file granularity. eCryptfs
is released as a Technology Preview for Red Hat Enterprise Linux 5 and
6.

The setuid mount.ecryptfs_private utility allows users to mount an
eCryptfs file system. This utility can only be run by users in the
'ecryptfs' group.

A race condition flaw was found in the way mount.ecryptfs_private
checked the permissions of a requested mount point when mounting an
encrypted file system. A local attacker could possibly use this flaw
to escalate their privileges by mounting over an arbitrary directory.
(CVE-2011-1831)

A race condition flaw in umount.ecryptfs_private could allow a local
attacker to unmount an arbitrary file system. (CVE-2011-1832)

It was found that mount.ecryptfs_private did not handle certain errors
correctly when updating the mtab (mounted file systems table) file,
allowing a local attacker to corrupt the mtab file and possibly
unmount an arbitrary file system. (CVE-2011-1834)

An insecure temporary file use flaw was found in the
ecryptfs-setup-private script. A local attacker could use this script
to insert their own key that will subsequently be used by a new user,
possibly giving the attacker access to the user's encrypted data if
existing file permissions allow access. (CVE-2011-1835)

A race condition flaw in mount.ecryptfs_private could allow a local
attacker to overwrite arbitrary files. (CVE-2011-1837)

A race condition flaw in the way temporary files were accessed in
mount.ecryptfs_private could allow a malicious, local user to make
arbitrary modifications to the mtab file. (CVE-2011-3145)

A race condition flaw was found in the way mount.ecryptfs_private
checked the permissions of the directory to mount. A local attacker
could use this flaw to mount (and then access) a directory they would
otherwise not have access to. Note: The fix for this issue is
incomplete until a kernel-space change is made. Future Red Hat
Enterprise Linux 5 and 6 kernel updates will correct this issue.
(CVE-2011-1833)

Red Hat would like to thank the Ubuntu Security Team for reporting
these issues. The Ubuntu Security Team acknowledges Vasiliy Kulikov of
Openwall and Dan Rosenberg as the original reporters of CVE-2011-1831,
CVE-2011-1832, and CVE-2011-1833; Dan Rosenberg and Marc Deslauriers
as the original reporters of CVE-2011-1834; Marc Deslauriers as the
original reporter of CVE-2011-1835; and Vasiliy Kulikov of Openwall as
the original reporter of CVE-2011-1837.

Users of ecryptfs-utils are advised to upgrade to these updated
packages, which contain backported patches to correct these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2011-September/017811.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?52413165"
  );
  # https://lists.centos.org/pipermail/centos-announce/2011-September/017812.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?db14ec10"
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2011-September/000040.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?af9cba0b"
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2011-September/000041.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2e894d9a"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ecryptfs-utils 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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ecryptfs-utils-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ecryptfs-utils-gui");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/10/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/09/23");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 5.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-5", reference:"ecryptfs-utils-75-5.el5_7.2")) flag++;
if (rpm_check(release:"CentOS-5", reference:"ecryptfs-utils-devel-75-5.el5_7.2")) flag++;
if (rpm_check(release:"CentOS-5", reference:"ecryptfs-utils-gui-75-5.el5_7.2")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ecryptfs-utils / ecryptfs-utils-devel / ecryptfs-utils-gui");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from SuSE 11 update information. The text itself is
# copyright (C) Novell, Inc.
#

if (NASL_LEVEL < 3000) exit(0);

include("compat.inc");

if (description)
{
  script_id(55827);
  script_version("1.8");
  script_cvs_date("Date: 2019/10/25 13:36:42");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1833", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1836", "CVE-2011-1837");

  script_name(english:"SuSE 11.1 Security Update : ecryptfs-utils (SAT Patch Number 4956)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 11 host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update of ecryptfs-utils fixes several security problems :

  - Race condition when checking mountpoint during mount.
    (CVE-2011-1831)

  - Race condition when checking mountpoint during unmount.
    (CVE-2011-1832)

  - Race condition when checking source during mount.
    (CVE-2011-1833)

  - Improper mtab handling allowing corruption due to
    resource limits, signals, etc. (CVE-2011-1834)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=709771"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1831.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1832.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1833.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1834.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1835.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1836.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1837.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 4956.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:ecryptfs-utils-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/08/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)11") audit(AUDIT_OS_NOT, "SuSE 11");
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SuSE 11", cpu);

pl = get_kb_item("Host/SuSE/patchlevel");
if (isnull(pl) || int(pl) != 1) audit(AUDIT_OS_NOT, "SuSE 11.1");


flag = 0;
if (rpm_check(release:"SLED11", sp:1, cpu:"i586", reference:"ecryptfs-utils-61-1.29.1")) flag++;
if (rpm_check(release:"SLED11", sp:1, cpu:"x86_64", reference:"ecryptfs-utils-61-1.29.1")) flag++;
if (rpm_check(release:"SLED11", sp:1, cpu:"x86_64", reference:"ecryptfs-utils-32bit-61-1.29.1")) flag++;
if (rpm_check(release:"SLES11", sp:1, reference:"ecryptfs-utils-61-1.29.1")) flag++;
if (rpm_check(release:"SLES11", sp:1, cpu:"s390x", reference:"ecryptfs-utils-32bit-61-1.29.1")) flag++;
if (rpm_check(release:"SLES11", sp:1, cpu:"x86_64", reference:"ecryptfs-utils-32bit-61-1.29.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2011-10733.
#

include("compat.inc");

if (description)
{
  script_id(56076);
  script_version("1.9");
  script_cvs_date("Date: 2019/08/02 13:32:33");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1837");
  script_xref(name:"FEDORA", value:"2011-10733");

  script_name(english:"Fedora 15 : ecryptfs-utils-90-1.fc15 (2011-10733)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - privilege escalation via mountpoint race conditions
    (CVE-2011-1831, CVE-2011-1832)

    - race condition when checking source during mount
      (CVE-2011-1833)

    - mtab corruption via improper handling (CVE-2011-1834)

    - key poisoning via insecure temp directory handling
      (CVE-2011-1835)

    - information disclosure via recovery mount in /tmp
      (CVE-2011-1836)

    - arbitrary file overwrite via lock counter race
      (CVE-2011-1837)

  - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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://bugzilla.redhat.com/show_bug.cgi?id=729465"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2011-September/065042.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?8d9e89ee"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ecryptfs-utils package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:15");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/09/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^15([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 15.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC15", reference:"ecryptfs-utils-90-1.fc15")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ecryptfs-utils");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(61124);
  script_version("1.7");
  script_cvs_date("Date: 2019/10/25 13:36:20");

  script_cve_id("CVE-2011-1831", "CVE-2011-3145");

  script_name(english:"Scientific Linux Security Update : ecryptfs-utils on SL5.x, SL6.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"eCryptfs is a stacked, cryptographic file system. It is transparent to
the underlying file system and provides per-file granularity.

The setuid mount.ecryptfs_private utility allows users to mount an
eCryptfs file system. This utility can only be run by users in the
'ecryptfs' group.

A race condition flaw was found in the way mount.ecryptfs_private
checked the permissions of a requested mount point when mounting an
encrypted file system. A local attacker could possibly use this flaw
to escalate their privileges by mounting over an arbitrary directory.
(CVE-2011-1831)

A race condition flaw in umount.ecryptfs_private could allow a local
attacker to unmount an arbitrary file system. (CVE-2011-1832)

It was found that mount.ecryptfs_private did not handle certain errors
correctly when updating the mtab (mounted file systems table) file,
allowing a local attacker to corrupt the mtab file and possibly
unmount an arbitrary file system. (CVE-2011-1834)

An insecure temporary file use flaw was found in the
ecryptfs-setup-private script. A local attacker could use this script
to insert their own key that will subsequently be used by a new user,
possibly giving the attacker access to the user's encrypted data if
existing file permissions allow access. (CVE-2011-1835)

A race condition flaw in mount.ecryptfs_private could allow a local
attacker to overwrite arbitrary files. (CVE-2011-1837)

A race condition flaw in the way temporary files were accessed in
mount.ecryptfs_private could allow a malicious, local user to make
arbitrary modifications to the mtab file. (CVE-2011-3145)

A race condition flaw was found in the way mount.ecryptfs_private
checked the permissions of the directory to mount. A local attacker
could use this flaw to mount (and then access) a directory they would
otherwise not have access to. Note: The fix for this issue is
incomplete until a kernel-space change is made. Future Scientific
Linux 5 and 6 kernel updates will correct this issue. (CVE-2011-1833)

Users of ecryptfs-utils are advised to upgrade to these updated
packages, which contain backported patches to correct these issues."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1109&L=scientific-linux-errata&T=0&P=615
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4fe712e0"
  );
  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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

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


flag = 0;
if (rpm_check(release:"SL5", reference:"ecryptfs-utils-75-5.el5_7.2")) flag++;
if (rpm_check(release:"SL5", reference:"ecryptfs-utils-debuginfo-75-5.el5_7.2")) flag++;
if (rpm_check(release:"SL5", reference:"ecryptfs-utils-devel-75-5.el5_7.2")) flag++;
if (rpm_check(release:"SL5", reference:"ecryptfs-utils-gui-75-5.el5_7.2")) flag++;

if (rpm_check(release:"SL6", reference:"ecryptfs-utils-82-6.el6_1.3")) flag++;
if (rpm_check(release:"SL6", reference:"ecryptfs-utils-debuginfo-82-6.el6_1.3")) flag++;
if (rpm_check(release:"SL6", reference:"ecryptfs-utils-devel-82-6.el6_1.3")) flag++;
if (rpm_check(release:"SL6", reference:"ecryptfs-utils-python-82-6.el6_1.3")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2011-10671.
#

include("compat.inc");

if (description)
{
  script_id(56095);
  script_version("1.9");
  script_cvs_date("Date: 2019/08/02 13:32:33");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1837");
  script_xref(name:"FEDORA", value:"2011-10671");

  script_name(english:"Fedora 16 : ecryptfs-utils-90-1.fc16 (2011-10671)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - privilege escalation via mountpoint race conditions
    (CVE-2011-1831, CVE-2011-1832)

    - race condition when checking source during mount
      (CVE-2011-1833)

    - mtab corruption via improper handling (CVE-2011-1834)

    - key poisoning via insecure temp directory handling
      (CVE-2011-1835)

    - information disclosure via recovery mount in /tmp
      (CVE-2011-1836)

    - arbitrary file overwrite via lock counter race
      (CVE-2011-1837)

  - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - improve logging messages of ecryptfs pam module

    - keep own copy of passphrase, pam clears it too early

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

    - keyring from auth stack does not survive, use pam_data
      and delayed keyring initialization

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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://bugzilla.redhat.com/show_bug.cgi?id=729465"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2011-September/065422.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e1c9a887"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ecryptfs-utils package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:16");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/09/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^16([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 16.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC16", reference:"ecryptfs-utils-90-1.fc16")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ecryptfs-utils");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update ecryptfs-utils-4986.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(75473);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/25 13:36:41");

  script_cve_id("CVE-2011-1831", "CVE-2011-1832", "CVE-2011-1833", "CVE-2011-1834", "CVE-2011-1835", "CVE-2011-1837");

  script_name(english:"openSUSE Security Update : ecryptfs-utils (openSUSE-SU-2011:0902-1)");
  script_summary(english:"Check for the ecryptfs-utils-4986 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update of ecryptfs-utils fixes several security problems :

  - CVE-2011-1831 - Race condition when checking mountpoint
    during mount.

  - CVE-2011-1832 - Race condition when checking mountpoint
    during unmount.

  - CVE-2011-1833 - Race condition when checking source
    during mount.

  - CVE-2011-1834 - Improper mtab handling allowing
    corruption due to resource limits, signals, etc.

  - CVE-2011-1835 - Key poisoning in ecryptfs-setup-private
    due to insecure temp directory.

  - CVE-2011-1837 - Predictable lock counter name and
    associated races."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=709771"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.opensuse.org/opensuse-updates/2011-08/msg00020.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ecryptfs-utils packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ecryptfs-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ecryptfs-utils-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:11.3");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE11\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "11.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE11.3", reference:"ecryptfs-utils-83-3.3.1") ) flag++;
if ( rpm_check(release:"SUSE11.3", cpu:"x86_64", reference:"ecryptfs-utils-32bit-83-3.3.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ecryptfs-utils");
}