Apple iOS up to 9.3.2 Keychain information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Apple iOS up to 9.3.2. This vulnerability affects unknown code of the component Keychain. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2016-4644. The attack needs to be approached locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Apple iOS up to 9.3.2 (Smartphone Operating System). This affects some unknown functionality of the component Keychain. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

In iOS before 9.3.3, tvOS before 9.2.2, and OS X El Capitan before v10.11.6 and Security Update 2016-004, a downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials.

The bug was discovered 07/18/2016. The weakness was presented 07/18/2016 by Gustavo Grieco (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2016-4644 since 05/11/2016. An attack has to be approached locally. A authentication is required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 92494 (Apple TV < 9.2.2 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.

Upgrading to version 9.3.3 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 (92494) and SecurityFocus (BID 90013†). See VDB-89675, VDB-89686, VDB-89687 and VDB-89689 for similar entries. 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: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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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Nessus ID: 92494
Nessus Name: Apple TV < 9.2.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 9.3.3

Timelineinfo

05/03/2016 🔍
05/11/2016 +8 days 🔍
07/18/2016 +68 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/21/2016 +3 days 🔍
01/11/2019 +904 days 🔍
01/12/2019 +1 days 🔍
04/28/2020 +472 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Researcher: Gustavo Grieco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4644 (🔍)
GCVE (CVE): GCVE-0-2016-4644
GCVE (VulDB): GCVE-100-129033
SecurityFocus: 90013 - Libxml2 'xmlsave.c' Denial of Service Vulnerability

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

Entryinfo

Created: 01/12/2019 11:29
Updated: 04/28/2020 18:05
Changes: 01/12/2019 11:29 (75), 04/28/2020 18:05 (5)
Complete: 🔍
Cache ID: 216::103

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

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