Vulnerabilities > CVE-2019-6732 - Information Exposure vulnerability in Foxitsoftware Phantompdf and Reader

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
foxitsoftware
microsoft
CWE-200
nessus
NVD
Published: 2019-03-21
Updated: 2019-10-09

Summary

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit PhantomPDF. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of the AFParseDateEx method. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7453.

Vulnerable Configurations

Part Description Count
Application
Foxitsoftware
172
OS
Microsoft
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

  • NASL familyWindows
    NASL idFOXIT_PHANTOM_8_3_9.NASL
    descriptionAccording to its version, the Foxit PhantomPDF application (formally known as Phantom) installed on the remote Windows host is prior to 8.3.9. It is, therefore, affected by following vulnerabilities: - An out-of-bounds read/write vulnerability exists when handling certain XFA element attributes. This occurs due to improper calculation of a null-terminated character and may cause an application crash. (CVE-2018-3956) - A signature validation bypass vulnerability exists which provides incorrect results when validating certain PDF documents. (CVE-2018-18688/CVE-2018-18689) - Flaws in how PDF files are processed/handled could lead to arbitrary code execution. An attacker can exploit this by convincing a user to open a specially crafted file in order to cause the execution of arbitrary code. (CVE-2019-6728,CVE-2019-6729) Additionally, the application was affected by multiple potential information disclosure, denial of service, and remote code execution vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id121246
    published2019-01-18
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121246
    titleFoxit PhantomPDF < 8.3.9 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(121246);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/31 15:18:52");

  script_cve_id(
    "CVE-2018-3956",
    "CVE-2018-18688",
    "CVE-2018-18689",
    "CVE-2019-5005",
    "CVE-2019-5006",
    "CVE-2019-5007",
    "CVE-2019-6727",
    "CVE-2019-6728",
    "CVE-2019-6729",
    "CVE-2019-6730",
    "CVE-2019-6731",
    "CVE-2019-6732",
    "CVE-2019-6733",
    "CVE-2019-6734",
    "CVE-2019-6735"
  );
  script_bugtraq_id(106798, 107496, 107552);
  script_xref(name:"ZDI", value:"ZDI-CAN-7347");
  script_xref(name:"ZDI", value:"ZDI-CAN-7452");
  script_xref(name:"ZDI", value:"ZDI-CAN-7601");
  script_xref(name:"ZDI", value:"ZDI-CAN-7353");
  script_xref(name:"ZDI", value:"ZDI-CAN-7423");
  script_xref(name:"ZDI", value:"ZDI-CAN-7368");
  script_xref(name:"ZDI", value:"ZDI-CAN-7369");
  script_xref(name:"ZDI", value:"ZDI-CAN-7453");
  script_xref(name:"ZDI", value:"ZDI-CAN-7576");
  script_xref(name:"ZDI", value:"ZDI-CAN-7355");

  script_name(english:"Foxit PhantomPDF < 8.3.9 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Foxit PhantomPDF.");

  script_set_attribute(attribute:"synopsis", value:
"A PDF toolkit installed on the remote Windows host is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version, the Foxit PhantomPDF application (formally
known as Phantom) installed on the remote Windows host is prior to
8.3.9. It is, therefore, affected by following vulnerabilities:

  - An out-of-bounds read/write vulnerability exists
    when handling certain XFA element attributes.
    This occurs due to improper calculation of a
    null-terminated character and may cause an application crash.
    (CVE-2018-3956)

  - A signature validation bypass vulnerability exists
    which provides incorrect results when validating
    certain PDF documents.
    (CVE-2018-18688/CVE-2018-18689)

  - Flaws in how PDF files are processed/handled could
    lead to arbitrary code execution. An attacker can 
    exploit this by convincing a user to open a specially
    crafted file in order to cause the execution of arbitrary
    code. (CVE-2019-6728,CVE-2019-6729)

Additionally, the application was affected by multiple potential 
information disclosure, denial of service, and remote code execution
vulnerabilities.");
  # https://www.foxitsoftware.com/support/security-bulletins.php
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2f244c3e");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Foxit PhantomPDF version 8.3.9 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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:"cvss_score_source", value:"CVE-2019-6729");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:foxitsoftware:phantom");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:foxitsoftware:phantompdf");
  script_end_attributes();

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

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

  script_dependencies("foxit_phantom_installed.nasl");
  script_require_keys("installed_sw/FoxitPhantomPDF");

  exit(0);
}

include('vcf.inc');

app = 'FoxitPhantomPDF';

app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [{
  'min_version' : '8.0',
  'max_version' : '8.3.8.39677',
  'fixed_version' : '8.3.9'
  }];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
  • NASL familyWindows
    NASL idFOXIT_READER_9_4.NASL
    descriptionThe version of Foxit Reader installed on the remote Windows host is prior to 9.4. It is, therefore, affected by multiple vulnerabilities: - An out-of-bounds read/write vulnerability and crash when handling XFA element attributes. (CVE-2018-3956) - A signature validation bypass vulnerability which could lead to incorrect validation results. (CVE-2018-18688, CVE-2018-18689) - Flaws in how PDF files are processed/handled could lead to arbitrary code execution. An attacker can exploit this by convincing a user to open a specially crafted file in order to cause the execution of arbitrary code. (CVE-2019-6728,CVE-2019-6729) Additionally, the application was affected by multiple potential information disclosure, denial of service, and remote code execution vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id121046
    published2019-01-09
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121046
    titleFoxit Reader < 9.4 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(121046);
  script_version("1.6");
  script_cvs_date("Date: 2019/10/31 15:18:52");

  script_cve_id(
    "CVE-2018-3956",
    "CVE-2018-18688",
    "CVE-2018-18689",
    "CVE-2019-5005",
    "CVE-2019-5006",
    "CVE-2019-5007",
    "CVE-2019-6727",
    "CVE-2019-6728",
    "CVE-2019-6729",
    "CVE-2019-6730",
    "CVE-2019-6731",
    "CVE-2019-6732",
    "CVE-2019-6733",
    "CVE-2019-6734",
    "CVE-2019-6735"
  );
  script_bugtraq_id(106798, 107496, 107552);

  script_name(english:"Foxit Reader < 9.4 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Foxit Reader.");

  script_set_attribute(attribute:"synopsis", value:
"A PDF viewer installed on the remote Windows host is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Foxit Reader installed on the remote Windows host is
prior to 9.4. It is, therefore, affected by multiple vulnerabilities:

  - An out-of-bounds read/write vulnerability and crash
    when handling XFA element attributes. (CVE-2018-3956)

  - A signature validation bypass vulnerability which
    could lead to incorrect validation results.
    (CVE-2018-18688, CVE-2018-18689)

  - Flaws in how PDF files are processed/handled could
    lead to arbitrary code execution. An attacker can 
    exploit this by convincing a user to open a specially
    crafted file in order to cause the execution of arbitrary
    code. (CVE-2019-6728,CVE-2019-6729)

Additionally, the application was affected by multiple potential 
information disclosure, denial of service, and remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://www.foxitsoftware.com/support/security-bulletins.php");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Foxit PhantomPDF version 9.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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:"cvss_score_source", value:"CVE-2019-6729");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:foxitsoftware:foxit_reader");
  script_end_attributes();

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

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

  script_dependencies("foxit_reader_installed.nasl");
  script_require_keys("installed_sw/Foxit Reader");

  exit(0);
}

include('vcf.inc');

app = 'Foxit Reader';

app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [{
  'min_version' : '9.0',
  'max_version' : '9.3.0.10826',
  'fixed_version' : '9.4'
  }];
  
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
  • NASL familyWindows
    NASL idFOXIT_PHANTOM_9_4.NASL
    descriptionAccording to its version, the Foxit PhantomPDF application (formally known as Phantom) installed on the remote Windows host is prior to 9.4. It is, therefore, affected by multiple vulnerabilities: - An out-of-bounds read/write vulnerability and crash when handling XFA element attributes. (CVE-2018-3956) - A signature validation bypass vulnerability which could lead to incorrect validation results. (CVE-2018-18688, CVE-2018-18689) - Flaws in how PDF files are processed/handled could lead to arbitrary code execution. An attacker can exploit this by convincing a user to open a specially crafted file in order to cause the execution of arbitrary code. (CVE-2019-6728,CVE-2019-6729) Additionally, the application was affected by multiple potential information disclosure, denial of service, and remote code execution vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id121045
    published2019-01-09
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121045
    titleFoxit PhantomPDF < 9.4 Multiple Vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(121045);
  script_version("1.6");
  script_cvs_date("Date: 2019/10/31 15:18:52");

  script_cve_id(
    "CVE-2018-3956",
    "CVE-2018-18688",
    "CVE-2018-18689",
    "CVE-2019-5005",
    "CVE-2019-5006",
    "CVE-2019-5007",
    "CVE-2019-6727",
    "CVE-2019-6728",
    "CVE-2019-6729",
    "CVE-2019-6730",
    "CVE-2019-6731",
    "CVE-2019-6732",
    "CVE-2019-6733",
    "CVE-2019-6734",
    "CVE-2019-6735"
  );
  script_bugtraq_id(106798, 107496, 107552);

  script_name(english:"Foxit PhantomPDF < 9.4 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Foxit PhantomPDF.");

  script_set_attribute(attribute:"synopsis", value:
"A PDF toolkit installed on the remote Windows host is affected by
a multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version, the Foxit PhantomPDF application (formally
known as Phantom) installed on the remote Windows host is prior to
9.4. It is, therefore, affected by multiple vulnerabilities:

  - An out-of-bounds read/write vulnerability and crash
    when handling XFA element attributes. (CVE-2018-3956)

  - A signature validation bypass vulnerability which
    could lead to incorrect validation results.
    (CVE-2018-18688, CVE-2018-18689)

  - Flaws in how PDF files are processed/handled could
    lead to arbitrary code execution. An attacker can 
    exploit this by convincing a user to open a specially
    crafted file in order to cause the execution of arbitrary
    code. (CVE-2019-6728,CVE-2019-6729)

Additionally, the application was affected by multiple potential 
information disclosure, denial of service, and remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://www.foxitsoftware.com/support/security-bulletins.php");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Foxit PhantomPDF version 9.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:R/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:"cvss_score_source", value:"CVE-2019-6729");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:foxitsoftware:phantom");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:foxitsoftware:phantompdf");
  script_end_attributes();

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

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

  script_dependencies("foxit_phantom_installed.nasl");
  script_require_keys("installed_sw/FoxitPhantomPDF");

  exit(0);
}

include('vcf.inc');

app = 'FoxitPhantomPDF';

app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [{
  'min_version' : '9.0',
  'max_version' : '9.3.0.10826',
  'fixed_version' : '9.4'
  }];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);

References