#VU40020 Improper access control in Google Android - CVE-2016-6723

Vulnerability identifier: #VU40020

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-6723

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Google Android
Operating systems & Components / Operating system

Vendor: Google

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

A denial of service vulnerability in Proxy Auto Config in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, 6.x before 2016-11-01, and 7.0 before 2016-11-01 could enable a remote attacker to use a specially crafted file to cause a device hang or reboot. This issue is rated as Moderate because it requires an uncommon device configuration. Android ID: A-30100884.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Google Android: 7.0

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External links
https://www.securityfocus.com/bid/94185
https://source.android.com/security/bulletin/2016-11-01.html
https://wwws.nightwatchcybersecurity.com/2016/11/07/crashing-android-devices-with-large-pac-files-cve-2016-6723/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.