Apple Mac OS X up to 10.11.5 IOSurface use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apple Mac OS X up to 10.11.5 and classified as critical. Impacted is an unknown function of the component IOSurface. This manipulation causes use after free. This vulnerability appears as CVE-2016-4625. The attack requires local access. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Apple Mac OS X up to 10.11.5 (Operating System) and classified as critical. Affected by this vulnerability is an unknown part of the component IOSurface. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free vulnerability in IOSurface in Apple OS X before 10.11.6 allows local users to gain privileges via unspecified vectors.

The weakness was presented 07/18/2016 by Ian Beer with Google Project Zero as HT206903 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2016-4625. The exploitation appears to be easy. Attacking locally is a requirement. A single authentication is necessary for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A use-after-free was addressed through improved memory management.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 92496 (Mac OS X 10.11.x < 10.11.6 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370095 (Apple Mac OS X v10.11.6 and Security Update 2016-004 Not Installed (APPLE-SA-2016-07-18-1)).

Upgrading to version 10.11.6 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (40653), Tenable (92496) and SecurityFocus (BID 91824†). See VDB-88079, VDB-89684, VDB-89686 and VDB-89687 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92496
Nessus Name: Mac OS X 10.11.x < 10.11.6 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63631
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities December-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.11.6

Timelineinfo

05/11/2016 🔍
07/18/2016 +68 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
07/21/2016 +2 days 🔍
07/21/2016 +0 days 🔍
12/11/2024 +3065 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206903
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4625 (🔍)
GCVE (CVE): GCVE-0-2016-4625
GCVE (VulDB): GCVE-100-89743
SecurityFocus: 91824 - Apple Mac OS X APPLE-SA-2016-07-18-1 Multiple Security Vulnerabilities
SecurityTracker: 1036348

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 07/19/2016 19:24
Updated: 12/11/2024 20:55
Changes: 07/19/2016 19:24 (74), 03/03/2019 12:35 (14), 09/06/2022 08:32 (4), 12/11/2024 20:55 (14)
Complete: 🔍
Cache ID: 216::103

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