Vulnerabilities > CVE-2016-4761 - Use After Free vulnerability in multiple products

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
webkitgtk
canonical
CWE-416
nessus

Summary

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Vulnerable Configurations

Part Description Count
Application
Webkitgtk
221
OS
Canonical
1

Common Weakness Enumeration (CWE)

Nessus

NASL familyUbuntu Local Security Checks
NASL idUBUNTU_USN-3166-1.NASL
descriptionA large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. 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 id96406
published2017-01-11
reporterUbuntu Security Notice (C) 2017-2020 Canonical, Inc. / NASL script (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/96406
titleUbuntu 16.04 LTS : webkit2gtk vulnerabilities (USN-3166-1)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3166-1. 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(96406);
  script_version("3.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/14");

  script_cve_id("CVE-2016-4613", "CVE-2016-4657", "CVE-2016-4666", "CVE-2016-4707", "CVE-2016-4728", "CVE-2016-4733", "CVE-2016-4734", "CVE-2016-4735", "CVE-2016-4759", "CVE-2016-4760", "CVE-2016-4761", "CVE-2016-4762", "CVE-2016-4764", "CVE-2016-4765", "CVE-2016-4767", "CVE-2016-4768", "CVE-2016-4769", "CVE-2016-7578");
  script_xref(name:"USN", value:"3166-1");

  script_name(english:"Ubuntu 16.04 LTS : webkit2gtk vulnerabilities (USN-3166-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description",
    value:
"A large number of security issues were discovered in the WebKitGTK+
Web and JavaScript engines. If a user were tricked into viewing a
malicious website, a remote attacker could exploit a variety of issues
related to web browser security, including cross-site scripting
attacks, denial of service attacks, and arbitrary code execution.

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/3166-1/"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"Update the affected libjavascriptcoregtk-4.0-18 and / or
libwebkit2gtk-4.0-37 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'WebKit not_number defineProperties UAF');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/08/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/01/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2017-2020 Canonical, Inc. / NASL script (C) 2017-2020 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)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04", "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:"libjavascriptcoregtk-4.0-18", pkgver:"2.14.2-0ubuntu0.16.04.1")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"libwebkit2gtk-4.0-37", pkgver:"2.14.2-0ubuntu0.16.04.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "libjavascriptcoregtk-4.0-18 / libwebkit2gtk-4.0-37");
}