Vulnerabilities > CVE-2020-6471 - Incorrect Default Permissions vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Insufficient policy enforcement in developer tools in Google Chrome prior to 83.0.4103.61 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing Functionality Not Properly Constrained by ACLs In applications, particularly web applications, access to functionality is mitigated by the authorization framework, whose job it is to map ACLs to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application or can run queries for data that he is otherwise not supposed to.
- Directory Indexing An adversary crafts a request to a target that results in the target listing/indexing the content of a directory as output. One common method of triggering directory contents as output is to construct a request containing a path that terminates in a directory name rather than a file name since many applications are configured to provide a list of the directory's contents when such a request is received. An adversary can use this to explore the directory tree on a target as well as learn the names of files. This can often end up revealing test files, backup files, temporary files, hidden files, configuration files, user accounts, script contents, as well as naming conventions, all of which can be used by an attacker to mount additional attacks.
- 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.
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Web Logs Tampering Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.
Nessus
NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_38C676BD9DEF11EAA94C3065EC8FD3EC.NASL description Google Chrome Releases reports : This release includes 38 security fixes, including CVEs CVE-2020-6465 through CVE-2020-6491. last seen 2020-05-31 modified 2020-05-26 plugin id 136849 published 2020-05-26 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136849 title FreeBSD : chromium -- multiple vulnerabilities (38c676bd-9def-11ea-a94c-3065ec8fd3ec) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2020 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(136849); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/28"); script_cve_id("CVE-2020-6465", "CVE-2020-6466", "CVE-2020-6467", "CVE-2020-6468", "CVE-2020-6469", "CVE-2020-6470", "CVE-2020-6471", "CVE-2020-6472", "CVE-2020-6473", "CVE-2020-6474", "CVE-2020-6475", "CVE-2020-6476", "CVE-2020-6477", "CVE-2020-6478", "CVE-2020-6479", "CVE-2020-6480", "CVE-2020-6481", "CVE-2020-6482", "CVE-2020-6483", "CVE-2020-6484", "CVE-2020-6485", "CVE-2020-6486", "CVE-2020-6487", "CVE-2020-6488", "CVE-2020-6489", "CVE-2020-6490", "CVE-2020-6491"); script_name(english:"FreeBSD : chromium -- multiple vulnerabilities (38c676bd-9def-11ea-a94c-3065ec8fd3ec)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Google Chrome Releases reports : This release includes 38 security fixes, including CVEs CVE-2020-6465 through CVE-2020-6491." ); # https://chromereleases.googleblog.com/2020/05/stable-channel-update-for-desktop_19.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?26bb137e" ); # https://vuxml.freebsd.org/freebsd/38c676bd-9def-11ea-a94c-3065ec8fd3ec.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?709276be" ); script_set_attribute(attribute:"solution", value:"Update the affected 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-2020-6477"); 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:freebsd:freebsd:chromium"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/19"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/24"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/26"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"chromium<83.0.4103.61")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");NASL family MacOS X Local Security Checks NASL id MACOSX_GOOGLE_CHROME_83_0_4103_61.NASL description The version of Google Chrome installed on the remote macOS host is prior to 83.0.4103.61. It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_05_stable-channel-update-for-desktop_19 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-05-21 plugin id 136742 published 2020-05-21 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136742 title Google Chrome < 83.0.4103.61 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include('compat.inc'); if (description) { script_id(136742); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/05"); script_cve_id( "CVE-2020-6465", "CVE-2020-6466", "CVE-2020-6467", "CVE-2020-6468", "CVE-2020-6469", "CVE-2020-6470", "CVE-2020-6471", "CVE-2020-6472", "CVE-2020-6473", "CVE-2020-6474", "CVE-2020-6475", "CVE-2020-6476", "CVE-2020-6477", "CVE-2020-6478", "CVE-2020-6479", "CVE-2020-6480", "CVE-2020-6481", "CVE-2020-6482", "CVE-2020-6483", "CVE-2020-6484", "CVE-2020-6485", "CVE-2020-6486", "CVE-2020-6487", "CVE-2020-6488", "CVE-2020-6489", "CVE-2020-6490", "CVE-2020-6491" ); script_xref(name:"IAVA", value:"2020-A-0220-S"); script_name(english:"Google Chrome < 83.0.4103.61 Multiple Vulnerabilities"); script_set_attribute(attribute:"synopsis", value: "A web browser installed on the remote macOS host is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Google Chrome installed on the remote macOS host is prior to 83.0.4103.61. It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_05_stable-channel-update-for-desktop_19 advisory. 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It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_05_stable-channel-update-for-desktop_19 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-05-21 plugin id 136743 published 2020-05-21 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136743 title Google Chrome < 83.0.4103.61 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include('compat.inc'); if (description) { script_id(136743); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/05"); script_cve_id( "CVE-2020-6465", "CVE-2020-6466", "CVE-2020-6467", "CVE-2020-6468", "CVE-2020-6469", "CVE-2020-6470", "CVE-2020-6471", "CVE-2020-6472", "CVE-2020-6473", "CVE-2020-6474", "CVE-2020-6475", "CVE-2020-6476", "CVE-2020-6477", "CVE-2020-6478", "CVE-2020-6479", "CVE-2020-6480", "CVE-2020-6481", "CVE-2020-6482", "CVE-2020-6483", "CVE-2020-6484", "CVE-2020-6485", "CVE-2020-6486", "CVE-2020-6487", "CVE-2020-6488", "CVE-2020-6489", "CVE-2020-6490", "CVE-2020-6491" ); script_xref(name:"IAVA", value:"2020-A-0220-S"); script_name(english:"Google Chrome < 83.0.4103.61 Multiple Vulnerabilities"); 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 Google Chrome installed on the remote Windows host is prior to 83.0.4103.61. It is, therefore, affected by multiple vulnerabilities as referenced in the 2020_05_stable-channel-update-for-desktop_19 advisory. 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It is, therefore, affected by multiple vulnerabilities: - A use after free in media in Microsoft Edge (Chromium) allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (CVE-2020-6466) - A use after free in WebRTC in Microsoft Edge (Chromium) allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2020-6467) - Type confusion in V8 in Microsoft Edge (Chromium) allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2020-6468) In addition, Microsoft Edge (Chromium) is also affected by several additional vulnerabilities including additional use-after-free vulnerabilties, privilege escalations, and insufficient policy enforcements. last seen 2020-06-05 modified 2020-05-29 plugin id 136968 published 2020-05-29 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136968 title Microsoft Edge (Chromium) < 83.0.478.37 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include('compat.inc'); if (description) { script_id(136968); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/26"); script_cve_id( "CVE-2020-1195", "CVE-2020-6465", "CVE-2020-6466", "CVE-2020-6467", "CVE-2020-6468", "CVE-2020-6469", "CVE-2020-6470", "CVE-2020-6471", "CVE-2020-6472", "CVE-2020-6473", "CVE-2020-6474", "CVE-2020-6475", "CVE-2020-6476", "CVE-2020-6478", "CVE-2020-6479", "CVE-2020-6480", "CVE-2020-6481", "CVE-2020-6482", "CVE-2020-6483", "CVE-2020-6484", "CVE-2020-6486", "CVE-2020-6487", "CVE-2020-6488", "CVE-2020-6489", "CVE-2020-6490" ); script_xref(name:"IAVA", value:"2020-A-0228"); script_name(english:"Microsoft Edge (Chromium) < 83.0.478.37 Multiple Vulnerabilities"); script_set_attribute(attribute:"synopsis", value: "The remote host has an web browser installed that is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Microsoft Edge (Chromium) installed on the remote Windows host is prior to 83.0.478.37. It is, therefore, affected by multiple vulnerabilities: - A use after free in media in Microsoft Edge (Chromium) allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (CVE-2020-6466) - A use after free in WebRTC in Microsoft Edge (Chromium) allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2020-6467) - Type confusion in V8 in Microsoft Edge (Chromium) allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2020-6468) In addition, Microsoft Edge (Chromium) is also affected by several additional vulnerabilities including additional use-after-free vulnerabilities, privilege escalations, and insufficient policy enforcements."); # https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV200002 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b4f0f972"); # https://docs.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2ec7f076"); script_set_attribute(attribute:"solution", value: "Upgrade to Microsoft Edge (Chromium) 83.0.478.37 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-2020-6466"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/19"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:edge"); script_set_attribute(attribute:"stig_severity", value:"III"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Windows"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("microsoft_edge_chromium_installed.nbin"); script_require_keys("installed_sw/Microsoft Edge (Chromium)", "SMB/Registry/Enumerated"); exit(0); } include('vcf.inc'); get_kb_item_or_exit('SMB/Registry/Enumerated'); app_info = vcf::get_app_info(app:'Microsoft Edge (Chromium)', win_local:TRUE); constraints = [{ 'fixed_version' : '83.0.478.37' }]; vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.html
- https://chromereleases.googleblog.com/2020/05/stable-channel-update-for-desktop_19.html
- https://chromereleases.googleblog.com/2020/05/stable-channel-update-for-desktop_19.html
- https://crbug.com/1059577
- https://crbug.com/1059577
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQYH5OK7O4BU6E37WWG5SEEHV65BFSGR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQYH5OK7O4BU6E37WWG5SEEHV65BFSGR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLFZ5N4EK6I4ZJP5YSKLLVN3ELXEB4XT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLFZ5N4EK6I4ZJP5YSKLLVN3ELXEB4XT/
- https://security.gentoo.org/glsa/202006-02
- https://security.gentoo.org/glsa/202006-02
- https://security.gentoo.org/glsa/202101-30
- https://security.gentoo.org/glsa/202101-30
- https://www.debian.org/security/2020/dsa-4714
- https://www.debian.org/security/2020/dsa-4714