Apple Mac OS X up to 10.11.1 Kernel memory corruption

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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple Mac OS X up to 10.11.1. It has been classified as problematic. This issue affects some unknown processing of the component Kernel. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2015-7084. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.1 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The kernel in Apple iOS before 9.2, OS X before 10.11.2, tvOS before 9.1, and watchOS before 2.1 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2015-7083.

The weakness was disclosed 12/08/2015 by Ian Beer with Google Project Zero as HT205637 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2015-7084 since 09/16/2015. Attacking locally is a requirement. The requirement for exploitation is a single authentication. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple memory corruption issues existed in the kernel. These issues were addressed through improved memory handling.

A public exploit has been developed by Google Security Research and been published 2 months after the advisory. 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 $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 87321 (Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124389 (Apple Mac OS X v10.11.2 and Security Update 2015-008 Not Installed (APPLE-SA-2015-12-08-3)).

Upgrading to version 10.11.2 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 (39357), Tenable (87321) and SecurityFocus (BID 78719†). The entries VDB-78550, VDB-78551, VDB-79541 and VDB-79545 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87321
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Mac OS X 10.11.2

Timelineinfo

09/16/2015 🔍
12/08/2015 +83 days 🔍
12/08/2015 +0 days 🔍
12/09/2015 +1 days 🔍
12/11/2015 +2 days 🔍
12/11/2015 +0 days 🔍
01/28/2016 +48 days 🔍
01/28/2016 +0 days 🔍
11/12/2024 +3211 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205637
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7084 (🔍)
GCVE (CVE): GCVE-0-2015-7084
GCVE (VulDB): GCVE-100-79567
SecurityFocus: 78719
SecurityTracker: 1034344

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

Entryinfo

Created: 12/09/2015 14:05
Updated: 11/12/2024 13:52
Changes: 12/09/2015 14:05 (43), 04/28/2018 23:56 (31), 06/29/2022 14:39 (2), 06/22/2024 19:17 (15), 11/12/2024 13:52 (2)
Complete: 🔍
Cache ID: 216:3ED:103

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