CVE-2023-21991

Oracle VirtualBox VGA MMIO Handling Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

3.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are Prior to 6.1.44 and Prior to 7.0.8. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 3.2 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N).

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability.
The specific flaw exists within the handling of VGA MMIO. 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 arbitrary code in the context of the hypervisor.

*Credits: Bien Pham (@bienpnn) from Qrious Security (@qriousec)

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2022-12-17 CVE Reserved
2023-04-18 CVE Published
2023-07-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2023.html	2023-04-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"		Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox"				< 6.1.44 Search vendor "Oracle" for product "Vm Virtualbox" and version " < 6.1.44"		-		Affected
Oracle Search vendor "Oracle"		Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox"				>= 7.0.0 < 7.0.8 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 7.0.0 < 7.0.8"		-		Affected