Vulnerabilities > CVE-2014-4622 - Permissions, Privileges, and Access Controls vulnerability in EMC Documentum Content Server

047910
CVSS 7.1 - HIGH
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
high complexity
emc
CWE-264
nessus
NVD
Published: 2014-09-17
Updated: 2017-08-29

Summary

EMC Documentum Content Server before 6.7 SP2 P17, 7.0 through P15, and 7.1 before P08 does not properly check authorization for subgroups of privileged groups, which allows remote authenticated sysadmins to gain super-user privileges, and bypass intended restrictions on data access and server actions, via unspecified vectors.

Vulnerable Configurations

Part Description Count
Application
Emc
11

Common Weakness Enumeration (CWE)

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 familyWindows
    NASL idEMC_DOCUMENTUM_CONTENT_SERVER_ESA-2014-091.NASL
    descriptionThe remote host is running a version of EMC Documentum Content Server that is affected by multiple vulnerabilities : - A privilege escalation vulnerability exists due to improper handling of system objects that allows a user to escalate their privileges to super-user status. (CVE-2014-4621) - A privilege escalation vulnerability exists due to improper handling of subgroups in the
    last seen2020-06-01
    modified2020-06-02
    plugin id77864
    published2014-09-25
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/77864
    titleEMC Documentum Content Server Multiple Privilege Escalation Vulnerabilities (ESA-2014-091)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(77864);
  script_version("1.4");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2014-4621", "CVE-2014-4622");
  script_bugtraq_id(69817, 69819);

  script_name(english:"EMC Documentum Content Server Multiple Privilege Escalation Vulnerabilities (ESA-2014-091)");
  script_summary(english:"Checks for Documentum Content Server.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple privilege escalation
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of EMC Documentum Content Server
that is affected by multiple vulnerabilities :

  - A privilege escalation vulnerability exists due to
    improper handling of system objects that allows a user
    to escalate their privileges to super-user status.
    (CVE-2014-4621)

  - A privilege escalation vulnerability exists due to
    improper handling of subgroups in the 'dm_superusers'
    group and other privileged groups. A user with sysadmin
    privileges can escalate their privileges to super-user
    status.  (CVE-2014-4622)");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2014/Sep/att-92/ESA-2014-091.txt");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant patch referenced in the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");

  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:"2014/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:emc:documentum_content_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("emc_documentum_content_server_installed.nbin");
  script_require_keys("installed_sw/EMC Documentum Content Server");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("emc_documentum.inc");

app_name = DOC_APP_NAME;
install = get_single_install(app_name:app_name, exit_if_unknown_ver:TRUE);

fixes = make_nested_list(
  make_list("7.1P08"),
  make_list("7.0P15" + DOC_HOTFIX),
  make_list("6.7SP2P17", DOC_NO_MIN)
);

documentum_check_and_report(install:install, fixes:fixes, severity:SECURITY_HOLE);
  • NASL familyWindows
    NASL idEMC_DOCUMENTUM_CONTENT_SERVER_ESA-2015-131.NASL
    descriptionThe version of EMC Documentum Content Server running on the remote host is affected by multiple vulnerabilities : - A privilege escalation vulnerability exists due to improper authorization checks performed on subgroups within the dm_superusers group. An authenticated, remote attacker can exploit this to gain super-user privileges, thus allowing access to data or unauthorized actions on the Content Server. Note that the previous fix for this issue (CVE-2014-4622) was incomplete. (CVE-2015-4531) - A privilege escalation vulnerability exists due to improper authorization and object type checks performed during the handling of RPC commands that involve the dm_bp_transition method. An authenticated, remote attacker can exploit this, by using a crafted script, to gain elevated privileges, thus allowing unauthorized actions, such as the execution of arbitrary code. Note that the previous fix for this issue (CVE-2014-2514) was incomplete. (CVE-2015-4532) - A privilege escalation vulnerability exists due to improper authorization checks during the handling of custom scripts. An authenticated, remote attacker can exploit this to gain elevated privileges, thus allowing unauthorized actions on the Content Server. Note that the previous fix for this issue (CVE-2014-2513) was incomplete. (CVE-2015-4533) - A remote code execution vulnerability exists due to the Java Method Server (JMS) not properly validating digital signatures for query strings without the
    last seen2020-06-01
    modified2020-06-02
    plugin id85544
    published2015-08-19
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/85544
    titleEMC Documentum Content Server Multiple Vulnerabilities (ESA-2015-131)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(85544);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id(
    "CVE-2015-4531",
    "CVE-2015-4532",
    "CVE-2015-4533",
    "CVE-2015-4534",
    "CVE-2015-4535"
  );
  script_bugtraq_id(
    76409,
    76410,
    76411,
    76413,
    76414
  );

  script_name(english:"EMC Documentum Content Server Multiple Vulnerabilities (ESA-2015-131)");
  script_summary(english:"Checks for the Documentum Content Server.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of EMC Documentum Content Server running on the remote
host is affected by multiple vulnerabilities :

  - A privilege escalation vulnerability exists due to
    improper authorization checks performed on subgroups
    within the dm_superusers group. An authenticated, remote
    attacker can exploit this to gain super-user privileges,
    thus allowing access to data or unauthorized actions on
    the Content Server. Note that the previous fix for this
    issue (CVE-2014-4622) was incomplete. (CVE-2015-4531)

  - A privilege escalation vulnerability exists due to
    improper authorization and object type checks performed
    during the handling of RPC commands that involve the
    dm_bp_transition method. An authenticated, remote
    attacker can exploit this, by using a crafted script,
    to gain elevated privileges, thus allowing unauthorized
    actions, such as the execution of arbitrary code. Note
    that the previous fix for this issue (CVE-2014-2514) was
    incomplete. (CVE-2015-4532)

  - A privilege escalation vulnerability exists due to
    improper authorization checks during the handling of
    custom scripts. An authenticated, remote attacker can
    exploit this to gain elevated privileges, thus allowing
    unauthorized actions on the Content Server. Note that
    the previous fix for this issue (CVE-2014-2513) was
    incomplete. (CVE-2015-4533)

  - A remote code execution vulnerability exists due to the
    Java Method Server (JMS) not properly validating digital
    signatures for query strings without the 'method_verb'
    parameter. An authenticated, remote attacker can exploit
    this, via a crafted digital signature for a query
    string, to execute arbitrary code in the JMS context,
    depending on what Java classes are present in the
    classloader. (CVE-2015-4534)

  - An information disclosure vulnerability exists due to
    a flaw in the Java Method Server (JMS) in how login
    tickets are logged in certain instances when the
    __debug_trace__ parameter is enabled. An authenticated,
    remote attacker with access to the logs can exploit this
    to gain access to super-user tickets. (CVE-2015-4535)");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2015/Aug/att-86/ESA-2015-131.txt");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant patch referenced in the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-4534");

  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:"2015/08/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/08/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:emc:documentum_content_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("emc_documentum_content_server_installed.nbin");
  script_require_keys("installed_sw/EMC Documentum Content Server");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("emc_documentum.inc");

app_name = DOC_APP_NAME;
install = get_single_install(app_name:app_name, exit_if_unknown_ver:TRUE);

fixes = make_nested_list(
  make_list("6.7SP1P32", DOC_NO_MIN),
  make_list("6.7SP2P25"),
  make_list("7.0P19"),
  make_list("7.1P16"),
  make_list("7.2P02")
);

documentum_check_and_report(install:install, fixes:fixes, severity:SECURITY_HOLE);

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/133143/emcdcs-escalate.txt
idPACKETSTORM:133143
last seen2016-12-05
published2015-08-18
reporterAndrey B. Panfilov
sourcehttps://packetstormsecurity.com/files/133143/EMC-Documentum-Content-Server-Privilege-Escalation.html
titleEMC Documentum Content Server Privilege Escalation

References