nginx up to 1.14.0/1.15.5 ngx_http_mp4_module information disclosure

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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in nginx up to 1.14.0/1.15.5. It has been rated as problematic. This vulnerability affects unknown code of the component ngx_http_mp4_module. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2018-16845. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in nginx up to 1.14.0/1.15.5 (Web Server). This affects an unknown function of the component ngx_http_mp4_module. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on availability. The summary by CVE is:

nginx before versions 1.15.6, 1.14.1 has a vulnerability in the ngx_http_mp4_module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted mp4 file. The issue only affects nginx if it is built with the ngx_http_mp4_module (the module is not built by default) and the .mp4. directive is used in the configuration file. Further, the attack is only possible if an attacker is able to trigger processing of a specially crafted mp4 file with the ngx_http_mp4_module.

The bug was discovered 11/06/2018. The weakness was published 11/07/2018 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2018-16845 since 09/11/2018. It is possible to initiate the attack remotely. 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. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118820 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : nginx vulnerabilities (USN-3812-1)), 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 197297 (Ubuntu Security Notification for Nginx Vulnerabilities (USN-3812-1)).

Upgrading to version 1.14.1 or 1.15.6 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 (118820) and SecurityFocus (BID 105868†). Similar entries are available at VDB-126523 and VDB-126524. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Web Server

Name

• nginx

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14.0
• 1.15.0
• 1.15.1
• 1.15.2
• 1.15.3
• 1.15.4
• 1.15.5

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 118820
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : nginx vulnerabilities (USN-3812-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: nginx 1.14.1/1.15.6

Timelineinfo

09/11/2018 🔍
11/06/2018 +56 days 🔍
11/06/2018 +0 days 🔍
11/07/2018 +1 days 🔍
11/07/2018 +0 days 🔍
11/07/2018 +0 days 🔍
11/08/2018 +1 days 🔍
11/08/2018 +0 days 🔍
06/05/2023 +1670 days 🔍

Sourcesinfo

Advisory: USN-3812-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-16845 (🔍)
GCVE (CVE): GCVE-0-2018-16845
GCVE (VulDB): GCVE-100-126525

OVAL: 🔍

SecurityFocus: 105868 - nginx Multiple Denial of Service Vulnerabilities
SecurityTracker: 1042039

See also: 🔍

Entryinfo

Created: 11/08/2018 07:51
Updated: 06/05/2023 08:14
Changes: 11/08/2018 07:51 (75), 04/10/2020 16:25 (5), 06/05/2023 08:04 (5), 06/05/2023 08:10 (12), 06/05/2023 08:14 (1)
Complete: 🔍
Cache ID: 216::103

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