| 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. |
Risk: Critical
CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]
CVE-ID: CVE-2016-4657
CWE-ID:
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: Yes
DescriptionThe 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.
Update to version 9.3.5.
Vulnerable software versionsApple iOS: 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.3.4
Apple Safari: 9.1, 9.1.1, 9.1.2
CPEhttps://support.apple.com/en-us/HT207107
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. However, a fully functional exploit for this vulnerability is available.
Risk: Medium
CVSSv3.1: 8.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]
CVE-ID: CVE-2016-4656
CWE-ID:
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: Yes
DescriptionThe 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.
Update Apple iOS to version 9.3.5.
Update MAC OS X to version 10.11.6.
Apple iOS: 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.3.4
MAC OS X: 10.10., 10.10.1, 10.10.2, 10.10.3, 10.10.4, 10.11, 10.11.1, 10.11.2, 10.11.3, 10.11.4, 10.11.5
CPEhttps://support.apple.com/en-us/HT207107
https://support.apple.com/en-us/HT207130
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?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
Risk: Critical
CVSSv3.1: 8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C] [PCI]
CVE-ID: CVE-2016-4655
CWE-ID:
CWE-200 - Information Exposure
Exploit availability: Yes
DescriptionThe 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.Update Apple iOS to version 9.3.5.
Update MAC OS X to version 10.11.6.
Apple iOS: 10.0.0
MAC OS X: 10.10., 10.10.1, 10.10.2, 10.10.3, 10.10.4, 10.11, 10.11.1, 10.11.2, 10.11.3, 10.11.4, 10.11.5
CPEhttps://support.apple.com/en-us/HT207107
https://support.apple.com/en-us/HT207130
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. However, a fully functional exploit for this vulnerability is available.