Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2016-1782

Improper Access Control

Published: Mar 24, 2016 | Modified: Oct 09, 2018
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-1782
CWEhttps://cwe.mitre.org/data/definitions/284.html

WebKit in Apple iOS before 9.3 and Safari before 9.1 does not properly restrict redirects that specify a TCP port number, which allows remote attackers to bypass intended port restrictions via a crafted web site.

Weakness

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

Name Vendor Start Version End Version
Safari Apple * 9.0.3 (including)
Iphone_os Apple * 9.2.1 (including)
Qtwebkit-opensource-src Ubuntu devel *
Qtwebkit-opensource-src Ubuntu esm-infra/xenial *
Qtwebkit-opensource-src Ubuntu trusty *
Qtwebkit-opensource-src Ubuntu wily *
Qtwebkit-opensource-src Ubuntu xenial *
Qtwebkit-opensource-src Ubuntu yakkety *
Qtwebkit-source Ubuntu devel *
Qtwebkit-source Ubuntu esm-apps/xenial *
Qtwebkit-source Ubuntu precise *
Qtwebkit-source Ubuntu trusty *
Qtwebkit-source Ubuntu wily *
Qtwebkit-source Ubuntu xenial *
Qtwebkit-source Ubuntu yakkety *
Webkit Ubuntu precise *
Webkit2gtk Ubuntu upstream *
Webkit2gtk Ubuntu wily *
Webkitgtk Ubuntu devel *
Webkitgtk Ubuntu esm-apps/xenial *
Webkitgtk Ubuntu trusty *
Webkitgtk Ubuntu wily *
Webkitgtk Ubuntu xenial *
Webkitgtk Ubuntu yakkety *

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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