SB2016082402 - Multiple vulnerabilities in Apple iOS

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Memory corruption (CVE-ID: CVE-2016-4657)

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.

2) Memory corruption (CVE-ID: CVE-2016-4656)

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.

3) Information disclosure (CVE-ID: CVE-2016-4655)

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.

Remediation

Install update from vendor's website.

References

• https://support.apple.com/en-us/HT207107
• https://support.apple.com/en-us/HT207130