Apple macOS up to 10.12.3 OpenSSL key management

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple macOS up to 10.12.3. It has been rated as problematic. The affected element is an unknown function of the component OpenSSL. This manipulation causes key management. This vulnerability is registered as CVE-2016-7056. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple macOS up to 10.12.3 (Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component OpenSSL. The manipulation with an unknown input leads to a key management vulnerability. The CWE definition for the vulnerability is CWE-320. As an impact it is known to affect confidentiality. The summary by CVE is:

A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys.

The bug was discovered 01/10/2017. The weakness was published 03/27/2017 as HT207615 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2016-7056 since 08/23/2016. An attack has to be approached locally. The successful exploitation requires a single authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue. The advisory points out:

A timing side channel issue was addressed by using constant time computation.

The vulnerability was handled as a non-public zero-day exploit for at least 76 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 99134 (macOS 10.12.x < 10.12.4 Multiple Vulnerabilities (httpoxy)), 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 175949 (Debian Security Update for openssl (DSA 3773-1)).

Upgrading to version 10.12.4 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 (99134) and SecurityFocus (BID 95375†). Similar entries are available at VDB-93073, VDB-93752, VDB-94628 and VDB-95275. 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: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Key management
CWE: CWE-320
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99134
Nessus Name: macOS 10.12.x < 10.12.4 Multiple Vulnerabilities (httpoxy)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT207615
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 10.12.4
Patch: 8aed2a7548362e88e84a7feb795a3a97e8395008

Timelineinfo

08/23/2016 🔍
01/10/2017 +140 days 🔍
01/10/2017 +0 days 🔍
03/27/2017 +76 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
03/31/2017 +3 days 🔍
09/10/2018 +527 days 🔍
11/20/2022 +1532 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207615
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7056 (🔍)
GCVE (CVE): GCVE-0-2016-7056
GCVE (VulDB): GCVE-100-98665

OVAL: 🔍

SecurityFocus: 95375 - OpenSSL CVE-2016-7056 Local Information Disclosure Vulnerability
OSVDB: - CVE-2016-7056 - OpenSSL - Timing Attack Issue
SecurityTracker: 1037575

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 03/28/2017 11:18
Updated: 11/20/2022 09:41
Changes: 03/28/2017 11:18 (82), 08/21/2020 15:17 (6), 11/20/2022 09:39 (5), 11/20/2022 09:40 (12), 11/20/2022 09:41 (1)
Complete: 🔍
Cache ID: 216::103

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

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