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.
5.5	$0-$5k	0.00

A vulnerability was found in dracut. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component initramfs Image Generator. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

A local information disclosure issue was found in dracut before 045 when generating initramfs images with world-readable permissions when 'early cpio' is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryption keys or credentials.

The bug was discovered 03/29/2018. The weakness was released 08/01/2018 by Security Team as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is known as CVE-2016-8637 since 10/12/2016. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 103771 (SUSE SLES12 Security Update : dracut (SUSE-SU-2017:2696-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169935 (OpenSUSE Security Update for dracut (openSUSE-SU-2017:1033-1)).

Upgrading to version 045 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103771) and SecurityFocus (BID 94128†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• dracut

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 5.0
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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: 🔍

Local: Yes
Remote: No

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: 103771
Nessus Name: SUSE SLES12 Security Update : dracut (SUSE-SU-2017:2696-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for dracut FEDORA-2016-cc5006bef7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: dracut 045
Patch: github.com

Timelineinfo

10/12/2016 🔍
11/07/2016 +26 days 🔍
10/10/2017 +336 days 🔍
10/11/2017 +1 days 🔍
03/29/2018 +169 days 🔍
08/01/2018 +124 days 🔍
08/01/2018 +0 days 🔍
08/02/2018 +1 days 🔍
04/28/2023 +1729 days 🔍

Sourcesinfo

Advisory: 0db98910a11c12a454eac4c8e86dc7a7bbc764a4
Researcher: Security Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8637 (🔍)
GCVE (CVE): GCVE-0-2016-8637
GCVE (VulDB): GCVE-100-122461
SecurityFocus: 94128 - Dracut CVE-2016-8637 Local Information Disclosure Vulnerability

Entryinfo

Created: 08/02/2018 07:24 AM
Updated: 04/28/2023 01:52 AM
Changes: 08/02/2018 07:24 AM (73), 03/12/2020 10:26 AM (4), 04/28/2023 01:44 AM (5), 04/28/2023 01:52 AM (12)
Complete: 🔍
Cache ID: 18:66F:40

Discussion

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