Multiple vulnerabilities in Apple iOS



Published: 2016-08-24 | Updated: 2017-02-21
Risk Critical
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2016-4657
CVE-2016-4656
CVE-2016-4655
CWE-ID CWE-119
CWE-200
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerability #2 is being exploited in the wild.
Vulnerability #3 is being exploited in the wild.
Vulnerable software
Subscribe 		Apple iOS
Operating systems & Components / Operating system

MAC OS X
Operating systems & Components / Operating system

Apple Safari
Client/Desktop applications / Web browsers

Vendor Apple Inc.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU4575

Risk: Critical

CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2016-4657

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error in WebKit. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Update to version 9.3.5.

Vulnerable software versions

Apple iOS: 9.3.0 - 9.3.4

Apple Safari: 9.1 - 9.1.2

CPE2.3 External links

http://support.apple.com/en-us/HT207107

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?

Yes. This vulnerability is being exploited in the wild.

2) Memory corruption

EUVDB-ID: #VU4574

Risk: Medium

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2016-4656

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: Yes

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to a boundary error when processing a malicious application. A local attacker can run a specially crafted application, trigger memory corruption and execute arbitrary code with SYSTEM privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Update Apple iOS to version 9.3.5.
Update MAC OS X to version 10.11.6.

Vulnerable software versions

Apple iOS: 9.3.0 - 9.3.4

MAC OS X: 10.10. - 10.11.5

CPE2.3 External links

http://support.apple.com/en-us/HT207107
http://support.apple.com/en-us/HT207130

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

3) Information disclosure

EUVDB-ID: #VU3573

Risk: Critical

CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:H/RL:O/RC:C]

CVE-ID: CVE-2016-4655

CWE-ID: CWE-200 - Information Exposure

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to improper input validation. A remote attacker can run a specially crafted application, bypass security restrictions and obtain portions of kernel memory.

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Note: the vulnerability was being actively exploited.


Mitigation

Update Apple iOS to version 9.3.5.
Update MAC OS X to version 10.11.6.

Vulnerable software versions

Apple iOS: 10.0.0

MAC OS X: 10.10. - 10.11.5

CPE2.3 External links

http://support.apple.com/en-us/HT207107
http://support.apple.com/en-us/HT207130

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?

Yes. This vulnerability is being exploited in the wild.



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