Apple Mac OS X up to 10.11.3 OpenSSH Key memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Apple Mac OS X up to 10.11.3. Affected by this vulnerability is an unknown functionality of the component OpenSSH. Executing a manipulation can lead to memory corruption (Key). This vulnerability is handled as CVE-2016-0778. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.3 (Operating System). It has been declared as critical. This vulnerability affects an unknown function of the component OpenSSH. The manipulation with an unknown input leads to a memory corruption vulnerability (Key). 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 weakness was released 03/21/2016 with Qualys as HT206167 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2016-0778 since 12/16/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The advisory points out:

Roaming, which was on by default in the OpenSSH client, exposed an information leak and a buffer overflow. These issues were addressed by disabling roaming in the client.

The vulnerability scanner Nessus provides a plugin with the ID 90096 (Mac OS X 10.11.x < 10.11.4 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 350064 (Amazon Linux Security Advisory for openssh: ALAS-2016-638).

Upgrading to version 10.11.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 22609.

The vulnerability is also documented in the databases at Tenable (90096), SecurityFocus (BID 80698†) and Vulnerability Center (SBV-57607†). Entries connected to this vulnerability are available at VDB-80266, VDB-80267, VDB-80330 and VDB-81428. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

ADP CISA Base Score: 8.1
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: Key
Class: Memory corruption / Key
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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 90096
Nessus Name: Mac OS X 10.11.x < 10.11.4 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-638
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.11.4
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

12/16/2015 🔍
01/13/2016 +28 days 🔍
01/14/2016 +0 days 🔍
03/21/2016 +67 days 🔍
03/21/2016 +0 days 🔍
03/21/2016 +0 days 🔍
03/22/2016 +1 days 🔍
03/22/2016 +0 days 🔍
03/23/2016 +1 days 🔍
05/29/2026 +3719 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206167
Organization: Qualys
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-0778 (🔍)
GCVE (CVE): GCVE-0-2016-0778
GCVE (VulDB): GCVE-100-81466

OVAL: 🔍

SecurityFocus: 80698 - OpenSSH CVE-2016-0778 Heap Based Buffer Overflow Vulnerability
SecurityTracker: 1034671
Vulnerability Center: 57607 - Apple OS X Remote Information Disclosure due to Issue in Server Connection - CVE-2016-0778, Medium

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 03/23/2016 12:11
Updated: 05/29/2026 23:40
Changes: 03/23/2016 12:11 (82), 02/02/2019 11:14 (13), 07/11/2022 09:10 (5), 05/29/2026 23:40 (25)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!