Apple Mac OS X up to 10.11.4 Captive Network Assistant input validation

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple Mac OS X up to 10.11.4. This affects an unknown part of the component Captive Network Assistant. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2016-1800. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.4 (Operating System). It has been classified as critical. This affects an unknown code of the component Captive Network Assistant. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Captive Network Assistant in Apple OS X before 10.11.5 mishandles a custom URL scheme, which allows user-assisted remote attackers to execute arbitrary code via unspecified vectors.

The weakness was released 05/16/2016 by Stefan Esser (lokihardt) with Apple as HT206567 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2016-1800 since 01/13/2016. The attack needs to be initiated within the local network. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

A custom URL scheme handling issue was addressed through improved input validation.

The vulnerability scanner Nessus provides a plugin with the ID 91229 (Mac OS X 10.9.5 / 10.10.5 Multiple Vulnerabilities (Security Update 2016-003)), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 122912 (Apple Mac OS X v10.11.5 and Security Update 2016-003 Not Installed (APPLE-SA-2016-05-16-4)).

Upgrading to version 10.11.5 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 (91229) and SecurityFocus (BID 90696†). Entries connected to this vulnerability are available at VDB-87425, VDB-87434, VDB-87435 and VDB-87436. 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: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91229
Nessus Name: Mac OS X 10.9.5 / 10.10.5 Multiple Vulnerabilities (Security Update 2016-003)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881901
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 November-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Mac OS X 10.11.5

Timelineinfo

01/13/2016 🔍
05/16/2016 +124 days 🔍
05/16/2016 +0 days 🔍
05/16/2016 +0 days 🔍
05/18/2016 +2 days 🔍
05/19/2016 +1 days 🔍
05/20/2016 +1 days 🔍
08/19/2022 +2282 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206567
Researcher: Stefan Esser (lokihardt)
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1800 (🔍)
GCVE (CVE): GCVE-0-2016-1800
GCVE (VulDB): GCVE-100-87441
SecurityFocus: 90696 - Apple Mac OS X APPLE-SA-2016-05-16-4 Multiple Security Vulnerabilities
SecurityTracker: 1035895

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

Entryinfo

Created: 05/18/2016 11:51
Updated: 08/19/2022 17:17
Changes: 05/18/2016 11:51 (70), 11/30/2018 12:01 (15), 08/19/2022 17:17 (3)
Complete: 🔍
Cache ID: 216:A89:103

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

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