Ubuntu.comUB:CVE-2021-3682CVE-2021-3682
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.003 Low
EPSS
Percentile
70.9%
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.
Bugs
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | qemu | < 1:2.11+dfsg-1ubuntu7.39 | UNKNOWN |
| ubuntu | 20.04 | noarch | qemu | < 1:4.2-3ubuntu6.21 | UNKNOWN |
| ubuntu | 21.10 | noarch | qemu | < 1:6.0+dfsg-2expubuntu1.2 | UNKNOWN |
| ubuntu | 22.04 | noarch | qemu | < 1:6.2+dfsg-2ubuntu5 | UNKNOWN |
| ubuntu | 22.10 | noarch | qemu | < 1:6.2+dfsg-2ubuntu5 | UNKNOWN |
| ubuntu | 14.04 | noarch | qemu | < 2.0.0+dfsg-2ubuntu1.47+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | qemu | < 1:2.5+dfsg-5ubuntu10.51+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
Related
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.003 Low
EPSS
Percentile
70.9%