Vulnerabilities > CVE-2019-17025 - Out-of-bounds Write vulnerability in multiple products

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL

Summary

Mozilla developers reported memory safety bugs present in Firefox 71. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 72.

Vulnerable Configurations

Part Description Count
Application
Mozilla
484
OS
Canonical
4

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-4234-1.NASL
    descriptionMultiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass Content Security Policy (CSP) restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id132854
    published2020-01-13
    reporterUbuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132854
    titleUbuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : firefox vulnerabilities (USN-4234-1)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Ubuntu Security Notice USN-4234-1. 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(132854);
      script_version("1.4");
      script_cvs_date("Date: 2020/02/14");
    
      script_cve_id("CVE-2019-17016", "CVE-2019-17017", "CVE-2019-17020", "CVE-2019-17022", "CVE-2019-17023", "CVE-2019-17024", "CVE-2019-17025", "CVE-2019-17026");
      script_xref(name:"USN", value:"4234-1");
    
      script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : firefox vulnerabilities (USN-4234-1)");
      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:
    "Multiple security issues were discovered in Firefox. If a user were
    tricked in to opening a specially crafted website, an attacker could
    potentially exploit these to cause a denial of service, obtain
    sensitive information, bypass Content Security Policy (CSP)
    restrictions, conduct cross-site scripting (XSS) attacks, or execute
    arbitrary code.
    
    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/4234-1/"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected firefox package."
      );
      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-2019-17025");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:firefox");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/08");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/01/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/13");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 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:"^(16\.04|18\.04|19\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.04 / 19.10", "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:"16.04", pkgname:"firefox", pkgver:"72.0.1+build1-0ubuntu0.16.04.1")) flag++;
    if (ubuntu_check(osver:"18.04", pkgname:"firefox", pkgver:"72.0.1+build1-0ubuntu0.18.04.1")) flag++;
    if (ubuntu_check(osver:"19.04", pkgname:"firefox", pkgver:"72.0.1+build1-0ubuntu0.19.04.1")) flag++;
    if (ubuntu_check(osver:"19.10", pkgname:"firefox", pkgver:"72.0.1+build1-0ubuntu0.19.10.1")) 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, "firefox");
    }
    
  • NASL familyMacOS X Local Security Checks
    NASL idMACOS_FIREFOX_72_0.NASL
    descriptionThe version of Firefox installed on the remote macOS or Mac OS X host is prior to 72.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory, including the following: - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. (CVE-2019-17016) - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2019-17017) - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to the XML document. (CVE-2019-17020) - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node
    last seen2020-06-01
    modified2020-06-02
    plugin id132708
    published2020-01-08
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132708
    titleMozilla Firefox < 72.0 Multiple Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    
    # The descriptive text and package checks in this plugin were
    # extracted from Mozilla Foundation Security Advisory mfsa2020-01.
    # The text itself is copyright (C) Mozilla Foundation.
    
    
    include('compat.inc');
    
    if (description)
    {
      script_id(132708);
      script_version("1.5");
      script_cvs_date("Date: 2020/02/14");
    
      script_cve_id(
        "CVE-2019-17016",
        "CVE-2019-17017",
        "CVE-2019-17020",
        "CVE-2019-17022",
        "CVE-2019-17023",
        "CVE-2019-17024",
        "CVE-2019-17025"
      );
      script_xref(name:"MFSA", value:"2020-01");
    
      script_name(english:"Mozilla Firefox < 72.0 Multiple Vulnerabilities");
    
      script_set_attribute(attribute:"synopsis", value:
    "A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
      script_set_attribute(attribute:"description", value:
    "The version of Firefox installed on the remote macOS or Mac OS X host is prior to 72.0. It is, therefore, affected by
    multiple vulnerabilities as referenced in the mfsa2020-01 advisory, including the following:
    
    - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly
      rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in
      data exfiltration. (CVE-2019-17016)
    
    - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a
      crash. We presume that with enough effort that it could be exploited to run arbitrary code.
      (CVE-2019-17017)
    
    - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the
      Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g.
      includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to
      the XML document. (CVE-2019-17020)
    
    - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape
      < and > characters. Because the resulting string is pasted directly into the text node of the element
      this does not result in a direct injection into the webpage; however, if a webpage subsequently copies
      the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two
      WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)
      
    - After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3,
      resulting in an invalid state transition in the TLS State Machine. If the client gets into this state,
      incoming Application Data records will be ignored. (CVE-2019-17023)
    
    - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in
      Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume
      that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024)
    
    - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler
      reported memory safety bugs present in Firefox 71. Some of these bugs showed evidence of memory
      corruption and we presume that with enough effort some of these could have been exploited to run
      arbitrary code. (CVE-2019-17025)
    
    Note that Nessus has not tested for this issue but
    has instead relied only on the application's self-reported version number.");
      script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2020-01/");
      script_set_attribute(attribute:"solution", value:
    "Upgrade to Mozilla Firefox version 72.0 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-2019-17025");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/01/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/08");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"MacOS X Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("macosx_firefox_installed.nasl");
      script_require_keys("MacOSX/Firefox/Installed");
    
      exit(0);
    }
    
    include('mozilla_version.inc');
    
    kb_base = 'MacOSX/Firefox';
    get_kb_item_or_exit(kb_base+'/Installed');
    
    version = get_kb_item_or_exit(kb_base+'/Version', exit_code:1);
    path = get_kb_item_or_exit(kb_base+'/Path', exit_code:1);
    
    is_esr = get_kb_item(kb_base+'/is_esr');
    if (is_esr) exit(0, 'The Mozilla Firefox installation is in the ESR branch.');
    
    mozilla_check_version(version:version, path:path, product:'firefox', esr:FALSE, fix:'72.0', xss:TRUE, severity:SECURITY_WARNING);
    
    
  • NASL familyWindows
    NASL idMOZILLA_FIREFOX_72_0.NASL
    descriptionThe version of Firefox installed on the remote Windows host is prior to 72.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory, including the following: - During the initialization of a new content process, a pointer offset can be manipulated leading to memory corruption and a potentially exploitable crash in the parent process. (CVE-2019-17015) - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. (CVE-2019-17016) - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2019-17017) - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve the accuracy of the keyboard. (CVE-2019-17018) - When Python was installed on Windows, a python file being served with the MIME type of text/plain could be executed by Python instead of being opened as a text file when the Open option was selected upon download. (CVE-2019-17019) - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to the XML document. (CVE-2019-17020) - During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process. (CVE-2019-17021) - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node
    last seen2020-06-01
    modified2020-06-02
    plugin id132709
    published2020-01-08
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132709
    titleMozilla Firefox < 72.0 Multiple Vulnerabilities