Vulnerabilities > CVE-2016-1671 - Path Traversal vulnerability in Google Chrome

047910
CVSS 8.1 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
google
CWE-22
nessus
NVD
Published: 2016-05-14
Updated: 2023-11-07

Summary

Google Chrome before 50.0.2661.102 on Android mishandles / (slash) and \ (backslash) characters, which allows attackers to conduct directory traversal attacks via a file: URL, related to net/base/escape.cc and net/base/filename_util.cc.

Vulnerable Configurations

Part Description Count
Application
Google
3761
OS
Google
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Nessus

  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_4DFAFA1624BA11E6BD313065EC8FD3EC.NASL
    descriptionGoogle Chrome Releases reports : 5 security fixes in this release, including : - [605766] High CVE-2016-1667: Same origin bypass in DOM. Credit to Mariusz Mlynski. - [605910] High CVE-2016-1668: Same origin bypass in Blink V8 bindings. Credit to Mariusz Mlynski. - [606115] High CVE-2016-1669: Buffer overflow in V8. Credit to Choongwoo Han. - [578882] Medium CVE-2016-1670: Race condition in loader. Credit to anonymous. - [586657] Medium CVE-2016-1671: Directory traversal using the file scheme on Android. Credit to Jann Horn.
    last seen2020-06-01
    modified2020-06-02
    plugin id91371
    published2016-05-31
    reporterThis script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/91371
    titleFreeBSD : chromium -- multiple vulnerabilities (4dfafa16-24ba-11e6-bd31-3065ec8fd3ec)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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(91371);
  script_version("2.5");
  script_cvs_date("Date: 2018/11/10 11:49:45");

  script_cve_id("CVE-2016-1667", "CVE-2016-1668", "CVE-2016-1669", "CVE-2016-1670", "CVE-2016-1671");

  script_name(english:"FreeBSD : chromium -- multiple vulnerabilities (4dfafa16-24ba-11e6-bd31-3065ec8fd3ec)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Google Chrome Releases reports :

5 security fixes in this release, including :

- [605766] High CVE-2016-1667: Same origin bypass in DOM. Credit to
Mariusz Mlynski.

- [605910] High CVE-2016-1668: Same origin bypass in Blink V8
bindings. Credit to Mariusz Mlynski.

- [606115] High CVE-2016-1669: Buffer overflow in V8. Credit to
Choongwoo Han.

- [578882] Medium CVE-2016-1670: Race condition in loader. Credit to
anonymous.

- [586657] Medium CVE-2016-1671: Directory traversal using the file
scheme on Android. Credit to Jann Horn."
  );
  # http://googlechromereleases.blogspot.nl/2016/05/stable-channel-update.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ab15f074"
  );
  # https://vuxml.freebsd.org/freebsd/4dfafa16-24ba-11e6-bd31-3065ec8fd3ec.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ae98bb1d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:chromium");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:chromium-npapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:chromium-pulse");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2018 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<50.0.2661.102")) flag++;
if (pkg_test(save_report:TRUE, pkg:"chromium-npapi<50.0.2661.102")) flag++;
if (pkg_test(save_report:TRUE, pkg:"chromium-pulse<50.0.2661.102")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201605-02.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201605-02 (Chromium: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in the Chromium web browser. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could possibly execute arbitrary code with the privileges of the process, cause a Denial of Service condition, obtain sensitive information, or bypass security restrictions. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id91176
    published2016-05-17
    reporterThis script is Copyright (C) 2016 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/91176
    titleGLSA-201605-02 : Chromium: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201605-02.
#
# The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(91176);
  script_version("$Revision: 2.6 $");
  script_cvs_date("$Date: 2016/10/10 14:25:16 $");

  script_cve_id("CVE-2016-1646", "CVE-2016-1647", "CVE-2016-1648", "CVE-2016-1649", "CVE-2016-1650", "CVE-2016-1651", "CVE-2016-1652", "CVE-2016-1653", "CVE-2016-1654", "CVE-2016-1655", "CVE-2016-1656", "CVE-2016-1657", "CVE-2016-1658", "CVE-2016-1659", "CVE-2016-1660", "CVE-2016-1661", "CVE-2016-1662", "CVE-2016-1663", "CVE-2016-1664", "CVE-2016-1665", "CVE-2016-1666", "CVE-2016-1667", "CVE-2016-1668", "CVE-2016-1669", "CVE-2016-1670", "CVE-2016-1671");
  script_xref(name:"GLSA", value:"201605-02");

  script_name(english:"GLSA-201605-02 : Chromium: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201605-02
(Chromium: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in the Chromium web
      browser. Please review the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker could possibly execute arbitrary code with the
      privileges of the process, cause a Denial of Service condition, obtain
      sensitive information, or bypass security restrictions.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201605-02"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All chromium users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=www-client/chromium-50.0.2661.102'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:chromium");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"www-client/chromium", unaffected:make_list("ge 50.0.2661.102"), vulnerable:make_list("lt 50.0.2661.102"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Chromium");
}

References