CVE-2024-8178
Last modified
CVE-2024-8178 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The ctl_write_buffer and ctl_read_buffer functions allocated memory to be returned to userspace, without initializing it. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the capabilities available to the bhyve process. EPSS estimates a 0.60% chance of exploitation in the next 30 days.
Description
The ctl_write_buffer and ctl_read_buffer functions allocated memory to be returned to userspace, without initializing it. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the capabilities available to the bhyve process. A malicious iSCSI initiator could achieve remote code execution on the iSCSI target host.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Freebsd | Freebsd | >= 13.0, < 13.3 | — |
| Freebsd | Freebsd | 13.3 | — |
| Freebsd | Freebsd | 13.4 | Beta3 |
| Freebsd | Freebsd | 14.0 | — |
| Freebsd | Freebsd | 14.1 | — |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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