Apple macOS up to 10.13.1 apache input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Apple macOS up to 10.13.1. The impacted element is an unknown function of the component apache. The manipulation leads to input validation. This vulnerability is traded as CVE-2016-2161. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple macOS up to 10.13.1 (Operating System). This issue affects some unknown functionality of the component apache. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

In Apache HTTP Server versions 2.4.0 to 2.4.23, malicious input to mod_auth_digest can cause the server to crash, and each instance continues to crash even for subsequently valid requests.

The bug was discovered 12/20/2016. The weakness was shared 10/31/2017 by Maksim Malyutin as HT208221 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2016-2161 since 01/29/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

Multiple issues were addressed by updating to version 2.4.27.

The vulnerability was handled as a non-public zero-day exploit for at least 114 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 99329 (Oracle Linux 7 : httpd (ELSA-2017-0906)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. 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 (99329) and SecurityFocus (BID 95076†). The entries VDB-89669, VDB-89849, VDB-93958 and VDB-94625 are related to this item. 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: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99329
Nessus Name: Oracle Linux 7 : httpd (ELSA-2017-0906)
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: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 10.13.1

Timelineinfo

01/29/2016 🔍
12/20/2016 +326 days 🔍
12/20/2016 +0 days 🔍
04/13/2017 +114 days 🔍
07/27/2017 +105 days 🔍
10/31/2017 +96 days 🔍
10/31/2017 +0 days 🔍
11/03/2017 +3 days 🔍
01/21/2021 +1175 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208221
Researcher: Maksim Malyutin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2161 (🔍)
GCVE (CVE): GCVE-0-2016-2161
GCVE (VulDB): GCVE-100-108929

OVAL: 🔍

SecurityFocus: 95076 - Apache HTTP Server CVE-2016-2161 Denial of Service Vulnerability
SecurityTracker: 1037508

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

Entryinfo

Created: 11/03/2017 15:01
Updated: 01/21/2021 17:40
Changes: 11/03/2017 15:01 (81), 12/03/2019 08:44 (6), 01/21/2021 17:40 (3)
Complete: 🔍
Cache ID: 216::103

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

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