CVE-2023-3301

Description

A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.6CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

• CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

  The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

• CWE-617•Reachable Assertion

  The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Systems

• qemu•qemu

  ≤ 8.0.3

• redhat•enterprise_linux

  8.0 | 9.0

References (3)

• https://access.redhat.com/security/cve/CVE-2023-3301
• https://bugzilla.redhat.com/show_bug.cgi?id=2215784
• https://security.netapp.com/advisory/ntap-20231020-0008/