// For flags

CVE-2020-3877

Apple Messages HandwritingProvider Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Se abordó una lectura fuera de límites con una comprobación de entrada mejorada. Este problema es corregido en macOS Catalina versión 10.15.3, watchOS versión 6.1.2. Un atacante remoto puede causar una finalización inesperada de la aplicación o una ejecución de código arbitrario.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apple Messages. User interaction is required to exploit this vulnerability in that the target must open the Messages application.
The specific flaw exists within the HandwritingProvider module in the Messages application. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

*Credits: Anonymous
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-18 CVE Reserved
  • 2020-01-29 CVE Published
  • 2024-03-05 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
References (2)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://support.apple.com/HT210919 2020-03-02
https://support.apple.com/HT210921 2020-03-02
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apple
Search vendor "Apple"
 Mac Os X
Search vendor "Apple" for product "Mac Os X"
 < 10.15.3
Search vendor "Apple" for product "Mac Os X" and version " < 10.15.3"
-
Affected
Apple
Search vendor "Apple"
 Watchos
Search vendor "Apple" for product "Watchos"
 < 6.1.2
Search vendor "Apple" for product "Watchos" and version " < 6.1.2"
-
Affected