Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2023-3494 | First vendor Publication | 2023-08-01 |
Vendor | Cve | Last vendor Modification | 2023-08-31 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | |||
---|---|---|---|
Overall CVSS Score | 8.8 | ||
Base Score | 8.8 | Environmental Score | 8.8 |
impact SubScore | 6 | Temporal Score | 8.8 |
Exploitabality Sub Score | 2 | ||
Attack Vector | Local | Attack Complexity | Low |
Privileges Required | Low | User Interaction | None |
Scope | Changed | Confidentiality Impact | High |
Integrity Impact | High | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : | |||
---|---|---|---|
Cvss Base Score | N/A | Attack Range | N/A |
Cvss Impact Score | N/A | Attack Complexity | N/A |
Cvss Expoit Score | N/A | Authentication | N/A |
Calculate full CVSS 2.0 Vectors scores |
Detail
The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copying this string. Malicious, privileged software running in a guest VM can exploit the buffer overflow to achieve code execution on the host in the bhyve userspace process, which typically runs as root, mitigated by the capabilities assigned through the Capsicum sandbox available to the bhyve process. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3494 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Sources (Detail)
Source | Url |
---|---|
MISC | https://security.FreeBSD.org/advisories/FreeBSD-SA-23:07.bhyve.asc https://security.netapp.com/advisory/ntap-20230831-0006/ |
Alert History
Date | Informations |
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2023-09-01 00:27:40 |
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2023-08-08 21:27:32 |
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2023-08-02 17:27:18 |
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2023-08-02 05:27:18 |
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