FreeBSD up to 11.1 Kernel Memory 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.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in FreeBSD up to 11.1. This affects an unknown function. Executing a manipulation can lead to information disclosure (Kernel Memory). This vulnerability is handled as CVE-2018-6919. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in FreeBSD up to 11.1 (Operating System) and classified as critical. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a information disclosure vulnerability (Kernel Memory). 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, integrity, and availability. CVE summarizes:

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, due to insufficient initialization of memory copied to userland, small amounts of kernel memory may be disclosed to userland processes. Unprivileged users may be able to access small amounts privileged kernel data.

The bug was discovered 04/04/2018. The weakness was released 04/04/2018 (Website). The advisory is shared for download at security.FreeBSD.org. This vulnerability was named CVE-2018-6919 since 02/12/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 11.1-STABLE eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103760†). Entries connected to this vulnerability are available at VDB-115814 and VDB-115815. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Name

• FreeBSD

Version

• 11.0
• 11.1

License

• open-source

Website

• Product: https://www.freebsd.org/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FreeBSD 11.1-STABLE

Timelineinfo

02/12/2018 🔍
04/04/2018 +51 days 🔍
04/04/2018 +0 days 🔍
04/04/2018 +0 days 🔍
04/04/2018 +0 days 🔍
04/05/2018 +1 days 🔍
02/09/2021 +1041 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.FreeBSD.org
Researcher: Ilja van Sprundel
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6919 (🔍)
GCVE (CVE): GCVE-0-2018-6919
GCVE (VulDB): GCVE-100-115816
SecurityFocus: 103760 - FreeBSD CVE-2018-6919 Multiple Local Information Disclosure Vulnerabilities

See also: 🔍

Entryinfo

Created: 04/05/2018 10:33
Updated: 02/09/2021 07:13
Changes: 04/05/2018 10:33 (61), 01/22/2020 10:50 (4), 02/09/2021 07:13 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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