Vulnerabilities > CVE-2017-7813 - Incorrect Type Conversion or Cast vulnerability in Mozilla Firefox
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
NONE Availability impact
HIGH Summary
Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Windows NASL id MOZILLA_FIREFOX_56_0.NASL description The version of Mozilla Firefox installed on the remote Windows host is prior to 56. It is, therefore, affected by multiple vulnerabilities, some of which allow code execution and potentially exploitable crashes. last seen 2020-06-01 modified 2020-06-02 plugin id 103680 published 2017-10-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103680 title Mozilla Firefox < 56 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(103680); script_version("1.4"); script_cvs_date("Date: 2019/11/12"); script_cve_id( "CVE-2017-7793", "CVE-2017-7805", "CVE-2017-7810", "CVE-2017-7811", "CVE-2017-7812", "CVE-2017-7813", "CVE-2017-7814", "CVE-2017-7815", "CVE-2017-7816", "CVE-2017-7817", "CVE-2017-7818", "CVE-2017-7819", "CVE-2017-7820", "CVE-2017-7821", "CVE-2017-7822", "CVE-2017-7823", "CVE-2017-7824" ); script_bugtraq_id( 101053, 101054, 101055, 101057 ); script_xref(name:"MFSA", value:"2017-21"); script_name(english:"Mozilla Firefox < 56 Multiple Vulnerabilities"); script_summary(english:"Checks the version of Firefox."); script_set_attribute(attribute:"synopsis", value: "A web browser installed on the remote Windows host is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Mozilla Firefox installed on the remote Windows host is prior to 56. It is, therefore, affected by multiple vulnerabilities, some of which allow code execution and potentially exploitable crashes."); script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/"); script_set_attribute(attribute:"solution", value: "Upgrade to Mozilla Firefox version 56 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7811"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/28"); script_set_attribute(attribute:"patch_publication_date", value:"2017/09/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/06"); 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:"Windows"); script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("mozilla_org_installed.nasl"); script_require_keys("Mozilla/Firefox/Version"); exit(0); } include("mozilla_version.inc"); port = get_kb_item("SMB/transport"); if (!port) port = 445; installs = get_kb_list("SMB/Mozilla/Firefox/*"); if (isnull(installs)) audit(AUDIT_NOT_INST, "Firefox"); mozilla_check_version(installs:installs, product:'firefox', fix:'56', severity:SECURITY_HOLE);NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3435-1.NASL description 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 read uninitialized memory, obtain sensitive information, bypass phishing and malware protection, spoof the origin in modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812, CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819, CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824) Martin Thomson discovered that NSS incorrectly generated handshake hashes. A remote attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7805) Multiple security issues were discovered in WebExtensions. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to download and open non-executable files without interaction, or obtain elevated privileges. (CVE-2017-7816, CVE-2017-7821). 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 seen 2020-06-01 modified 2020-06-02 plugin id 103646 published 2017-10-03 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103646 title Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : firefox vulnerabilities (USN-3435-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3435-2.NASL description USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash plugin to crash in some circumstances. This update fixes the problem. We apologize for the inconvenience. 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 read uninitialized memory, obtain sensitive information, bypass phishing and malware protection, spoof the origin in modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812, CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819, CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824) Martin Thomson discovered that NSS incorrectly generated handshake hashes. A remote attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7805) Multiple security issues were discovered in WebExtensions. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to download and open non-executable files without interaction, or obtain elevated privileges. (CVE-2017-7816, CVE-2017-7821). 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 seen 2020-06-01 modified 2020-06-02 plugin id 103667 published 2017-10-05 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103667 title Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : firefox regression (USN-3435-2) NASL family MacOS X Local Security Checks NASL id MACOSX_FIREFOX_56_0.NASL description The version of Mozilla Firefox installed on the remote macOS or Mac OS X host is prior to 56. It is, therefore, affected by multiple vulnerabilities, some of which allow code execution and potentially exploitable application crashes. last seen 2020-06-01 modified 2020-06-02 plugin id 103678 published 2017-10-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103678 title Mozilla Firefox < 56 Multiple Vulnerabilities (macOS) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_1098A15BB0F642B7B5C78A8646E8BE07.NASL description Mozilla Foundation reports : CVE-2017-7793: Use-after-free with Fetch API CVE-2017-7817: Firefox for Android address bar spoofing through fullscreen mode CVE-2017-7818: Use-after-free during ARIA array manipulation CVE-2017-7819: Use-after-free while resizing images in design mode CVE-2017-7824: Buffer overflow when drawing and validating elements with ANGLE CVE-2017-7805: Use-after-free in TLS 1.2 generating handshake hashes CVE-2017-7812: Drag and drop of malicious page content to the tab bar can open locally stored files CVE-2017-7814: Blob and data URLs bypass phishing and malware protection warnings CVE-2017-7813: Integer truncation in the JavaScript parser CVE-2017-7825: OS X fonts render some Tibetan and Arabic unicode characters as spaces CVE-2017-7815: Spoofing attack with modal dialogs on non-e10s installations CVE-2017-7816: WebExtensions can load about: URLs in extension UI CVE-2017-7821: WebExtensions can download and open non-executable files without user interaction CVE-2017-7823: CSP sandbox directive did not create a unique origin CVE-2017-7822: WebCrypto allows AES-GCM with 0-length IV CVE-2017-7820: Xray wrapper bypass with new tab and web console CVE-2017-7811: Memory safety bugs fixed in Firefox 56 CVE-2017-7810: Memory safety bugs fixed in Firefox 56 and Firefox ESR 52.4 last seen 2020-06-01 modified 2020-06-02 plugin id 103556 published 2017-09-29 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103556 title FreeBSD : mozilla -- multiple vulnerabilities (1098a15b-b0f6-42b7-b5c7-8a8646e8be07)