Billy Jheng Bing-Jhong (@st424204), Muhammad Alifa Ramdhan (@n0psledbyte), Nguyen Hoang ThαΊ‘ch (@hi_im_d4rkn3ss) of STAR LabsZDI-22-1152(0Day) (Pwn2Own) Oracle VirtualBox IEM PGMPhysRead Out-Of-Bounds Write Local Privilege Escalation Vulnerability
7.5 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
3.4 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
MULTIPLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:M/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
25.2%
This vulnerability allows local attackers to escalate privileges 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 PGMPhysRead function. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
Related
7.5 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
3.4 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
MULTIPLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:M/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
25.2%