VDB-97127 · CVE-2016-4686 · BID 93848

Apple iOS up to 10.0 Contacts access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple iOS up to 10.0. This affects an unknown function of the component Contacts. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2016-4686. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 10.0 (Smartphone Operating System). It has been rated as critical. This issue affects some unknown functionality of the component Contacts. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in certain Apple products. iOS before 10.1 is affected. The issue involves the "Contacts" component, which does not prevent an app's Address Book access after access revocation.

The bug was discovered 10/24/2016. The weakness was disclosed 02/20/2017 by Razvan Deaconescu and Mihai Chiroiu with TU Darmstadt (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2016-4686 since 05/11/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/22/2025). It is expected to see the exploit prices for this product increasing in the near future.The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 119 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version 10.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 93848†) and SecurityTracker (ID 1037088†). The entries VDB-93050, VDB-93071, VDB-97126 and VDB-97128 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

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

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS 10.1

Timelineinfo

05/11/2016 🔍
10/24/2016 +166 days 🔍
10/24/2016 +0 days 🔍
02/20/2017 +119 days 🔍
02/20/2017 +0 days 🔍
02/20/2017 +0 days 🔍
03/22/2025 +2952 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Researcher: Razvan Deaconescu, Mihai Chiroiu
Organization: TU Darmstadt
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4686 (🔍)
GCVE (CVE): GCVE-0-2016-4686
GCVE (VulDB): GCVE-100-97127
SecurityFocus: 93848 - Apple iOS CVE-2016-4686 Security Bypass Vulnerability
OSVDB: - CVE-2016-4686 - Apple - iOS - Security Bypass Issue
SecurityTracker: 1037088

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

Entryinfo

Created: 02/20/2017 15:00
Updated: 03/22/2025 19:38
Changes: 02/20/2017 15:00 (70), 08/16/2020 06:37 (1), 03/22/2025 19:38 (19)
Complete: 🔍
Cache ID: 216::103

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

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