Apple iOS up to 10.1.1 FontParser memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$5k-$25k0.00

A vulnerability has been found in Apple iOS up to 10.1.1 (Smartphone Operating System) and classified as critical. This vulnerability affects some unknown functionality of the component FontParser. 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 bug was discovered 01/23/2017. The weakness was published 12/13/2016 as HT207422 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2016-4688 since 05/11/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/06/2022). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A buffer overflow existed in the handling of font files. This issue was addressed through improved bounds checking.

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.

Upgrading to version 10.2 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (95917). Similar entries are available at 87463, 91385, 91659 and 93042.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
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: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

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-03 February-2017
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS 10.2

Timelineinfo

05/11/2016 🔍
11/27/2016 +200 days 🔍
12/12/2016 +15 days 🔍
12/13/2016 +1 days 🔍
12/14/2016 +1 days 🔍
12/16/2016 +2 days 🔍
01/23/2017 +38 days 🔍
02/20/2017 +28 days 🔍
10/06/2022 +2054 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207422
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4688 (🔍)
SecurityTracker: 1037469
SecurityFocus: 94572 - Apple iOS/macOS/tvOS/watchOS CVE-2016-4688 Buffer Overflow Vulnerability

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

Entryinfo

Created: 12/14/2016 11:50
Updated: 10/06/2022 08:54
Changes: 12/14/2016 11:50 (57), 07/05/2019 16:44 (24), 10/06/2022 08:54 (4)
Complete: 🔍

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