Apache HTTP Server up to 2.4.24 mod_auth_digest input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apache HTTP Server up to 2.4.24. Impacted is an unknown function of the component mod_auth_digest. This manipulation causes input validation. This vulnerability is tracked as CVE-2016-2161. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apache HTTP Server up to 2.4.24 (Web Server). Affected by this vulnerability is an unknown functionality of the component mod_auth_digest. 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 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 disclosed 12/20/2016 by Security Team with Qihoo 360 as Apache HTTP Server 2.4.25 Released as confirmed release notes (Website). It is possible to read the advisory at httpd.apache.org. This vulnerability is known as CVE-2016-2161 since 01/29/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 100098 (Ubuntu 14.04 LTS / 16.04 LTS / 16.10 : apache2 vulnerabilities (USN-3279-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu 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 2.4.25 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 (100098), SecurityFocus (BID 85919†) and SecurityTracker (ID 1037508†). The entries VDB-67180, VDB-67181, VDB-67182 and VDB-67183 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 100098
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 16.10 : apache2 vulnerabilities (USN-3279-1)
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: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: HTTP Server 2.4.25

Timelineinfo

01/29/2016 🔍
04/07/2016 +69 days 🔍
12/20/2016 +257 days 🔍
12/20/2016 +0 days 🔍
12/20/2016 +0 days 🔍
12/21/2016 +1 days 🔍
12/22/2016 +1 days 🔍
05/10/2017 +139 days 🔍
07/27/2017 +78 days 🔍
07/14/2019 +717 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: Apache HTTP Server 2.4.25 Released
Researcher: Security Team
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2161 (🔍)
GCVE (CVE): GCVE-0-2016-2161
GCVE (VulDB): GCVE-100-94627

OVAL: 🔍

SecurityFocus: 85919 - LibTIFF CVE-2016-3619 Out Of Bounds Read Denial of Service Vulnerability
SecurityTracker: 1037508

See also: 🔍

Entryinfo

Created: 12/22/2016 10:29
Updated: 07/14/2019 17:42
Changes: 12/22/2016 10:29 (70), 07/14/2019 17:42 (19)
Complete: 🔍
Cache ID: 216::103

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