Apple macOS up to 10.13.1 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.
7.1$0-$5k0.00

A vulnerability has been found in Apple macOS up to 10.13.1 (Operating System) and classified as critical. Affected by this vulnerability is an unknown code of the component apache. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.

The bug was discovered 12/05/2016. The weakness was released 10/31/2017 as HT208221 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2016-8740 since 10/18/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple issues were addressed by updating to version 2.4.27.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. 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 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 10.13.1 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 Exploit-DB (40909). Entries connected to this vulnerability are available at 89669, 89849, 93752 and 93958.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

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: 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: 🔍
Exposure Time: 🔍

Upgrade: macOS 10.13.1
Patch: github.com

Timelineinfo

10/18/2016 🔍
12/04/2016 +47 days 🔍
12/05/2016 +0 days 🔍
12/05/2016 +0 days 🔍
03/31/2017 +116 days 🔍
10/31/2017 +214 days 🔍
10/31/2017 +0 days 🔍
11/03/2017 +3 days 🔍
01/05/2023 +1889 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208221
Researcher: Naveen Tiwari.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-8740 (🔍)
OVAL: 🔍

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

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

Entryinfo

Created: 11/03/2017 15:01
Updated: 01/05/2023 14:41
Changes: 11/03/2017 15:01 (80), 12/03/2019 08:51 (8), 01/21/2021 17:56 (4), 01/21/2021 17:59 (1), 01/05/2023 14:41 (3)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!