8.5
CVE-2021-3682
- EPSS 0.31%
- Published 05.08.2021 20:15:09
- Last modified 21.11.2024 06:22:09
- Source secalert@redhat.com
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A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.
Data is provided by the National Vulnerability Database (NVD)
Redhat ≫ Enterprise Linux Version8.0 SwEdition-
Redhat ≫ Enterprise Linux Version8.0 SwEditionadvanced_virtualization
Debian ≫ Debian Linux Version9.0
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version11.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.31% | 0.538 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 8.5 | 1.8 | 6 |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
|
| nvd@nist.gov | 6 | 6.8 | 6.4 |
AV:N/AC:M/Au:S/C:P/I:P/A:P
|
CWE-763 Release of Invalid Pointer or Reference
The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.