VDB-98604 · CVE-2016-8740 · HT207615

Apple macOS up to 10.12.3 Apache input validation

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Apple macOS up to 10.12.3. Affected by this vulnerability is an unknown functionality of the component Apache. The manipulation results in input validation. This vulnerability is cataloged as CVE-2016-8740. The attack may be launched remotely. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Apple macOS up to 10.12.3 (Operating System). Affected is some unknown functionality of the component Apache. 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 availability.

The bug was discovered 12/05/2016. The weakness was shared 03/27/2017 as HT207615 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2016-8740 since 10/18/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple issues existed in Apache before 2.4.25. These were addressed by updating LibreSSL to version 2.4.25.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 96451 (Apache 2.4.x < 2.4.25 Multiple Vulnerabilities (httpoxy)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370348 (Apple Mac OS X Security Update Sierra 10.12.4, El Capitan 2017-001 and Yosemite 2017-001 Not Installed (APPLE-SA-2017-03-27-3)).

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 Exploit-DB (40909), Tenable (96451) and SecurityFocus (BID 94650†). The entries VDB-89669, VDB-89849, VDB-93958 and VDB-94625 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Apple

Name

macOS

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 96451
Nessus Name: Apache 2.4.x < 2.4.25 Multiple Vulnerabilities (httpoxy)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801284
OpenVAS Name: Apache HTTP Server mod_http2 Denial of Service Vulnerability (Windows)
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: github.com

Timelineinfo

10/18/2016 🔍
12/05/2016 +48 days 🔍
12/05/2016 +0 days 🔍
12/05/2016 +0 days 🔍
01/12/2017 +38 days 🔍
03/27/2017 +74 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
09/16/2024 +2729 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207615
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-8740 (🔍)
GCVE (CVE): GCVE-0-2016-8740
GCVE (VulDB): GCVE-100-98604

OVAL: 🔍

SecurityFocus: 94650 - Apache HTTP Server CVE-2016-8740 Denial of Service Vulnerability
OSVDB: - CVE-2016-8740 - Apache HTTP Server - Denial of Service Issue
SecurityTracker: 1037388

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

Entryinfo

Created: 03/28/2017 11:01
Updated: 09/16/2024 11:04
Changes: 03/28/2017 11:01 (80), 08/20/2020 16:23 (9), 11/15/2022 15:42 (6), 09/16/2024 11:04 (14)
Complete: 🔍
Cache ID: 216:E5F:103