Vulnerabilities > CVE-2011-1836 - Permissions, Privileges, and Access Controls vulnerability in Ecryptfs Ecryptfs-Utils and Ecryptfs Utils

047910
CVSS 4.6 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
local
low complexity
ecryptfs
CWE-264
nessus

Summary

utils/ecryptfs-recover-private in ecryptfs-utils before 90 does not establish a subdirectory with safe permissions, which might allow local users to bypass intended access restrictions via standard filesystem operations during the recovery process.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1188-1.NASL
    descriptionVasiliy 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
    last seen2020-06-01
    modified2020-06-02
    plugin id55810
    published2011-08-10
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55810
    titleUbuntu 10.04 LTS / 10.10 / 11.04 : ecryptfs-utils vulnerabilities (USN-1188-1)
    code
    #
    # (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 familySuSE Local Security Checks
    NASL idSUSE_11_ECRYPTFS-UTILS-110804.NASL
    descriptionThis 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)
    last seen2020-06-01
    modified2020-06-02
    plugin id55827
    published2011-08-12
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/55827
    titleSuSE 11.1 Security Update : ecryptfs-utils (SAT Patch Number 4956)
    code
    #%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 familyFedora Local Security Checks
    NASL idFEDORA_2011-10733.NASL
    description - 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id56076
    published2011-09-06
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56076
    titleFedora 15 : ecryptfs-utils-90-1.fc15 (2011-10733)
    code
    #%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 familyFedora Local Security Checks
    NASL idFEDORA_2011-10671.NASL
    description - 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id56095
    published2011-09-07
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56095
    titleFedora 16 : ecryptfs-utils-90-1.fc16 (2011-10671)
    code
    #%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 familyFedora Local Security Checks
    NASL idFEDORA_2011-10718.NASL
    description - 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id56075
    published2011-09-06
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56075
    titleFedora 14 : ecryptfs-utils-90-1.fc14 (2011-10718)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory 2011-10718.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(56075);
      script_version("1.10");
      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:"2011-10718");
    
      script_name(english:"Fedora 14 : ecryptfs-utils-90-1.fc14 (2011-10718)");
      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/065061.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?17111c06"
      );
      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:14");
    
      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:"^14([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 14.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:"FC14", reference:"ecryptfs-utils-90-1.fc14")) 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");
    }