Apple Mac OS X up to 10.11.0 Security double free

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple Mac OS X up to 10.11.0. Impacted is an unknown function of the component Security. Performing a manipulation results in double free. This vulnerability is identified as CVE-2015-6983. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple Mac OS X up to 10.11.0 (Operating System). This affects an unknown code of the component Security. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Double free vulnerability in Apple iOS before 9.1 and OS X before 10.11.1 allows attackers to write to arbitrary files via a crafted app that accesses AtomicBufferedFile descriptors.

The weakness was released 10/21/2015 by Mark Mentovai with Microsoft as HT205375 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2015-6983 since 09/16/2015. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A double free issue existed in the handling of AtomicBufferedFile descriptors. This issue was addressed through improved validation of AtomicBufferedFile descriptors.

The vulnerability scanner Nessus provides a plugin with the ID 86654 (Mac OS X < 10.11.1 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124182 (Apple Mac OS X Security Update 2015-007 Not Installed (APPLE-SA-2015-10-21-4)).

Upgrading to version 10.11.1 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 Tenable (86654), SecurityFocus (BID 77263†) and Vulnerability Center (SBV-53853†). Entries connected to this vulnerability are available at VDB-77709, VDB-78724, VDB-78725 and VDB-78727. 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: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 86654
Nessus Name: Mac OS X < 10.11.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Mac OS X 10.11.1

Timelineinfo

09/16/2015 🔍
10/21/2015 +35 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/22/2015 +1 days 🔍
10/22/2015 +0 days 🔍
10/23/2015 +1 days 🔍
11/21/2024 +3317 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205375
Researcher: Mark Mentovai
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6983 (🔍)
GCVE (CVE): GCVE-0-2015-6983
GCVE (VulDB): GCVE-100-78831
SecurityFocus: 77263 - Apple iOS and Mac OS X Multiple Security Vulnerabilities
SecurityTracker: 1033929
Vulnerability Center: 53853 - Apple MacOS X Remote File System Write due to a Double Free Issue in AtomicBufferedFile Descriptors - CVE-2015-6983, High

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

Entryinfo

Created: 10/22/2015 12:04
Updated: 11/21/2024 02:41
Changes: 10/22/2015 12:04 (66), 02/16/2018 14:10 (7), 06/24/2022 17:45 (3), 06/24/2022 17:52 (1), 11/21/2024 02:41 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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