Apple iOS up to 9.0 Security AtomicBufferedFile double free

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple iOS up to 9.0. Affected by this vulnerability is the function AtomicBufferedFile of the component Security. Executing a manipulation can lead to double free. This vulnerability is registered as CVE-2015-6983. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Apple iOS up to 9.0 (Smartphone Operating System). This vulnerability affects the function AtomicBufferedFile of the component Security. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect integrity, and availability. CVE summarizes:

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 published 10/21/2015 by David Benjamin, Greg Kerr, Mark Mentovai and Sergey Ulanov with Google Chrome Team as HT205370 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2015-6983 since 09/16/2015. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is 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 9.1 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) and SecurityFocus (BID 77263†). Similar entries are available at VDB-77709, VDB-78724, VDB-78725 and VDB-78727. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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: iOS 9.1

Timelineinfo

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

Sourcesinfo

Vendor: apple.com

Advisory: HT205370
Researcher: David Benjamin, Greg Kerr, Mark Mentovai, Sergey Ulanov
Organization: Google Chrome Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6983 (🔍)
GCVE (CVE): GCVE-0-2015-6983
GCVE (VulDB): GCVE-100-78760
SecurityFocus: 77263 - Apple iOS and Mac OS X Multiple Security Vulnerabilities
SecurityTracker: 1033929

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 10/22/2015 11:17
Updated: 11/21/2024 02:41
Changes: 10/22/2015 11:17 (57), 02/13/2018 07:17 (12), 06/24/2022 08:31 (3), 06/24/2022 08:35 (1), 11/21/2024 02:41 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!