// For flags

CVE-2018-8429

Microsoft Excel XLS File Use-After-Free Information Disclosure Vulnerability

Severity Score

5.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Excel Viewer, Microsoft Office, Microsoft Excel.

Existe una vulnerabilidad de divulgación de información cuando Microsoft Excel no muestra correctamente los contenidos de su memoria. Esto también se conoce como "Microsoft Excel Information Disclosure Vulnerability". Esto afecta a Microsoft Excel Viewer, Microsoft Office y Microsoft Excel.

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Office Excel. 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 .xls files. Crafted data in an .xls file can cause a pointer to be reused after it has been freed. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process at medium integrity.

*Credits: Jaanus KpClarified Security
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
  • 2018-09-13 CVE Published
  • 2024-08-05 CVE Updated
  • 2024-08-23 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
Excel
Search vendor "Microsoft" for product "Excel"
2010
Search vendor "Microsoft" for product "Excel" and version "2010"
sp2
Affected
Microsoft
Search vendor "Microsoft"
Excel
Search vendor "Microsoft" for product "Excel"
2013
Search vendor "Microsoft" for product "Excel" and version "2013"
sp1
Affected
Microsoft
Search vendor "Microsoft"
Excel
Search vendor "Microsoft" for product "Excel"
2013
Search vendor "Microsoft" for product "Excel" and version "2013"
sp1, rt
Affected
Microsoft
Search vendor "Microsoft"
Excel
Search vendor "Microsoft" for product "Excel"
2016
Search vendor "Microsoft" for product "Excel" and version "2016"
-
Affected
Microsoft
Search vendor "Microsoft"
Excel Viewer
Search vendor "Microsoft" for product "Excel Viewer"
2007
Search vendor "Microsoft" for product "Excel Viewer" and version "2007"
sp3
Affected
Microsoft
Search vendor "Microsoft"
Office
Search vendor "Microsoft" for product "Office"
2016
Search vendor "Microsoft" for product "Office" and version "2016"
click-to-run
Affected
Microsoft
Search vendor "Microsoft"
Office Compatibility Pack
Search vendor "Microsoft" for product "Office Compatibility Pack"
-sp3
Affected
Microsoft
Search vendor "Microsoft"
Office For Mac
Search vendor "Microsoft" for product "Office For Mac"
2016
Search vendor "Microsoft" for product "Office For Mac" and version "2016"
-
Affected