CVE-2018-8336

Microsoft Windows SMB Client Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory, aka "Windows Kernel Information Disclosure Vulnerability." This affects Windows Server 2008, Windows 7, Windows Server 2008 R2. This CVE ID is unique from CVE-2018-8419, CVE-2018-8442, CVE-2018-8443, CVE-2018-8445, CVE-2018-8446.

Existe una vulnerabilidad de divulgación de información cuando el kernel de Windows gestiona incorrectamente los objetos en la memoria. Esto también se conoce como "Windows Kernel Information Disclosure Vulnerability". Esto afecta a Windows Server 2008, Windows 7 y Windows Server 2008 R2. El ID de este CVE es diferente de CVE-2018-8419, CVE-2018-8442, CVE-2018-8443, CVE-2018-8445 y CVE-2018-8446.

This vulnerability allows local attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the kernel-mode portion of the Windows SMB client. Crafted data in an SMB reply can trigger a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to escalate privilege to the level of SYSTEM.

*Credits: Haikuo Xie of Baidu Security Lab

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-03-14 CVE Reserved
2018-09-13 CVE Published
2024-01-12 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105246	Third Party Advisory
http://www.securitytracker.com/id/1041635	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8336	2018-11-02

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Windows 7 Search vendor "Microsoft" for product "Windows 7"				-		sp1		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"				-		sp2		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"				-		sp2, itanium		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"				r2 Search vendor "Microsoft" for product "Windows Server 2008" and version "r2"		sp1, itanium		Affected