CVE-2018-8527

Microsoft SQL Server Management Studio xel File XML External Entity Processing 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 in Microsoft SQL Server Management Studio (SSMS) when parsing a malicious XEL file containing a reference to an external entity, aka "SQL Server Management Studio Information Disclosure Vulnerability." This affects SQL Server Management Studio 17.9, SQL Server Management Studio 18.0. This CVE ID is unique from CVE-2018-8532, CVE-2018-8533.

Existe una vulnerabilidad de divulgación de información en Microsoft SQL Server Management Studio (SSMS) al analizar un archivo XEL malicioso que contiene una referencia a una entidad externa. Esto también se conoce como "SQL Server Management Studio Information Disclosure Vulnerability". Esto afecta a SQL Server Management Studio 17.9 y SQL Server Management Studio 18.0. El ID de este CVE es diferente de CVE-2018-8532 y CVE-2018-8533.

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft SQL Server Management Studio. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of XEL files. Due to the improper restriction of XML External Entity (XXE) references, a specially crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of the current process.

Microsoft SQL Server Management Studio versions 17.9 and 18.0 Preview 4 suffer from a xel filetype XML external entity injection vulnerability.

*Credits: John Page (aka hyp3rlinx) - ApparitionSec

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

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
2018-10-10 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2024-08-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-611: Improper Restriction of XML External Entity Reference

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/105474	Third Party Advisory
http://www.securitytracker.com/id/1041826	Third Party Advisory

URL	Date	SRC
https://www.exploit-db.com/exploits/45585	2024-08-05

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8527	2018-11-27

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"		Sql Server Management Studio Search vendor "Microsoft" for product "Sql Server Management Studio"				17.9 Search vendor "Microsoft" for product "Sql Server Management Studio" and version "17.9"		-		Affected
Microsoft Search vendor "Microsoft"		Sql Server Management Studio Search vendor "Microsoft" for product "Sql Server Management Studio"				18.0 Search vendor "Microsoft" for product "Sql Server Management Studio" and version "18.0"		-		Affected