Data Handling in Apple MAC OS X

1) Data Handling

EUVDB-ID: #VU40921

Risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2014-8835

CWE-ID: CWE-19 - Data Handling

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The xpc_data_get_bytes function in libxpc in Apple OS X before 10.10.2 does not verify that a dictionary's Attributes key has the xpc_data data type, which allows attackers to execute arbitrary code by providing a crafted dictionary to sysmond, related to an "XPC type confusion" issue.

Mitigation

Install update from vendor's website.

Vulnerable software versions

macOS: 10.10.0 - 10.10.1

CPE2.3

• cpe:2.3:o:apple:macos:10.10.0:*:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:10.10.1:*:*:*:*:*:*:*

External links

https://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html
https://packetstormsecurity.com/files/135701/OS-X-Sysmond-XPC-Type-Confusion-Privilege-Escalation.html
https://support.apple.com/HT204244
https://www.exploit-db.com/exploits/35742/
https://www.securityfocus.com/bid/71992
https://www.securitytracker.com/id/1031650
https://code.google.com/p/google-security-research/issues/detail?id=121
https://exchange.xforce.ibmcloud.com/vulnerabilities/100530

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. However, proof of concept for this vulnerability is available.