Apple iOS up to 9.2.0 Kernel memory corruption

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

Summaryinfo

A vulnerability marked as problematic has been reported in Apple iOS up to 9.2.0. Affected is an unknown function of the component Kernel. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2016-1721. The attack needs to be approached locally. In addition, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple iOS up to 9.2.0 (Smartphone Operating System). This affects an unknown code of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The kernel in Apple iOS before 9.2.1, OS X before 10.11.3, and tvOS before 9.1.1 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

The weakness was presented 01/19/2016 by Ian Beer with Google Project Zero as HT205732 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2016-1721 since 01/13/2016. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A memory corruption issue was addressed through improved memory handling.

The exploit is shared for download 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 88418 (Apple TV < 9.1.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124584 (Apple Mac OS X v10.11.3 and Security Update 2016-001 Not Installed (APPLE-SA-2016-01-19-2)).

Upgrading to version 9.2.1 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 Exploit-DB (39358), Tenable (88418), SecurityFocus (BID 81277†) and Vulnerability Center (SBV-57473†). See VDB-79234, VDB-80331, VDB-80332 and VDB-80333 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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
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CVSSv2info

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

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

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Price Prediction: 🔍
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Nessus ID: 88418
Nessus Name: Apple TV < 9.1.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 February-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 9.2.1

Timelineinfo

01/13/2016 🔍
01/19/2016 +6 days 🔍
01/19/2016 +0 days 🔍
01/19/2016 +0 days 🔍
01/21/2016 +2 days 🔍
01/27/2016 +6 days 🔍
01/28/2016 +1 days 🔍
02/01/2016 +4 days 🔍
03/22/2016 +50 days 🔍
06/22/2024 +3014 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205732
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1721 (🔍)
GCVE (CVE): GCVE-0-2016-1721
GCVE (VulDB): GCVE-100-80343
SecurityFocus: 81277 - Apple Mac OS X and iOS Multiple Memory Corruption Vulnerabilities
SecurityTracker: 1034736
Vulnerability Center: 57473 - Apple Mac OS X 10.11-10.11.2 Local Code Execution in Kernel, Medium

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

Entryinfo

Created: 01/21/2016 09:35
Updated: 06/22/2024 19:17
Changes: 01/21/2016 09:35 (80), 02/02/2019 10:30 (15), 07/03/2022 18:39 (3), 06/22/2024 19:17 (15)
Complete: 🔍
Cache ID: 216:576:103

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

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