// For flags

CVE-2023-38421

Apple macOS Hydra Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

The issue was addressed with improved checks. This issue is fixed in macOS Ventura 13.5, macOS Monterey 12.6.8. Processing a 3D model may result in disclosure of process memory.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apple macOS. Interaction with the Hydra library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the Hydra framework. Crafted data in an image file can trigger a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

macOS Ventura 13.5 addresses bypass, code execution, out of bounds read, and use-after-free vulnerabilities.

*Credits: Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-07-20 CVE Reserved
  • 2023-07-26 CVE Published
  • 2024-10-22 CVE Updated
  • 2025-04-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
References (2)
URL Tag Source
https://support.apple.com/en-us/HT213843 Release Notes
https://support.apple.com/en-us/HT213844 Release Notes
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apple
Search vendor "Apple"
 Macos
Search vendor "Apple" for product "Macos"
 < 12.6.8
Search vendor "Apple" for product "Macos" and version " < 12.6.8"
-
Affected
Apple
Search vendor "Apple"
 Macos
Search vendor "Apple" for product "Macos"
 >= 13.0 < 13.5
Search vendor "Apple" for product "Macos" and version " >= 13.0 < 13.5"
-
Affected