Apple watchOS up to 3.1.2 FontParser 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 has been found in Apple watchOS up to 3.1.2 and classified as critical. This affects an unknown part of the component FontParser. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2016-4691. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apple watchOS up to 3.1.2 (Smartwatch Operating System). This affects an unknown part of the component FontParser. 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 bug was discovered 12/13/2016. The weakness was shared 01/23/2017 by daybreaker@Minionz with Trend Micro as HT207487 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2016-4691 since 05/11/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 95917 (macOS 10.12.x < 10.12.2 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 370262 (Apple macOS Sierra Security Update 10.12.2 Not Installed (APPLE-SA-2016-12-13-1)).

Upgrading to version 3.1.3 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 (95917) and SecurityFocus (BID 94905†). The entries VDB-87463, VDB-91385, VDB-91659 and VDB-93261 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: 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: 95917
Nessus Name: macOS 10.12.x < 10.12.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 February-2017
OpenVAS File: 🔍
OpenVAS 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: watchOS 3.1.3

Timelineinfo

05/11/2016 🔍
12/13/2016 +216 days 🔍
12/13/2016 +0 days 🔍
12/16/2016 +3 days 🔍
01/23/2017 +38 days 🔍
01/23/2017 +0 days 🔍
01/25/2017 +2 days 🔍
02/20/2017 +26 days 🔍
09/20/2024 +2769 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207487
Researcher: daybreaker@Minionz
Organization: Trend Micro
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4691 (🔍)
GCVE (CVE): GCVE-0-2016-4691
GCVE (VulDB): GCVE-100-95889
SecurityFocus: 94905 - Apple macOS/watchOS/iOS/tvOS Multiple Security Vulnerabilities
OSVDB: - CVE-2016-4691 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1037469

See also: 🔍

Entryinfo

Created: 01/25/2017 11:21
Updated: 09/20/2024 04:00
Changes: 01/25/2017 11:21 (76), 07/31/2020 09:15 (8), 11/03/2022 12:29 (4), 09/20/2024 04:00 (16)
Complete: 🔍
Cache ID: 216:372:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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