Access bypass in Apple Safari

1) Access bypass

EUVDB-ID: #VU599

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-4760

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote web-site to obtain non-HTTP services on the target system.
The weakness exists due to improper checking of HTTP responses. A malicious web-site returns specially crafted HTTP/0.9 responses that allows to get non-HTTP services.
Successful exploitation of the vulnerability results in access to non-HTTP services on the vulnerable system.

Mitigation

Update to 10.0.

Vulnerable software versions

Apple Safari: 9.0 - 9.1.3

iTunes: 12.0.1.26 - 12.4.3.1

Apple iOS: 9.0.0 - 9.3.5

External links

http://support.apple.com/en-us/HT207157
http://support.apple.com/en-us/HT207158
http://support.apple.com/en-us/HT207157
http://support.apple.com/cs-cz/HT207143

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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