CVE-2021-2145: Oracle VirtualBox NAT Integer Underflow Privilege Escalation Vulnerability
First published: Thu Apr 22 2021(Updated: )
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 implementation of NAT. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
Credit: secalert_us@oracle.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle VirtualBox | ||
| Oracle VM VirtualBox | <6.1.20 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this Oracle VirtualBox vulnerability?
The vulnerability ID of this Oracle VirtualBox vulnerability is CVE-2021-2145.
What is the title of this Oracle VirtualBox vulnerability?
The title of this Oracle VirtualBox vulnerability is Oracle VirtualBox NAT Integer Underflow Privilege Escalation Vulnerability.
What is the affected software of this vulnerability?
The affected software of this vulnerability is Oracle VirtualBox version prior to 6.1.20.
What is the severity of CVE-2021-2145?
The severity of CVE-2021-2145 is high with a severity value of 7.5.
How can I fix this vulnerability?
To fix this vulnerability, it is recommended to update Oracle VirtualBox to version 6.1.20 or later.
- collector/zdi-advisory
- alias/ZDI-21-455
- alias/ZDI-CAN-13473
- alias/CVE-2021-2145
- collector/nvd-index
- vendor/oracle
- canonical/oracle virtualbox
- canonical/oracle vm virtualbox