CVE-2021-3682

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.

CVSS v3.0 8.5 HIGH
CVSS v2.0 6.0 MEDIUM

8.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:S/C:P/I:P/A:P

Exploitability : 6.8 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1989651	Issue Tracking Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0006/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html	Third Party Advisory
https://www.debian.org/security/2021/dsa-4980	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:qemu:qemu::::::::
	cpe:2.3:a:qemu:qemu:6.1.0:-::::::
	cpe:2.3:a:qemu:qemu:6.1.0:rc1::::::

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:8.0::::-:::
	cpe:2.3:o:redhat:enterprise_linux:8.0::::advanced_virtualization:::

Information

Published : 2021-08-05 20:15

Updated : 2021-10-18 12:20

NVD link : CVE-2021-3682

Mitre link : CVE-2021-3682

JSON object : View

Products Affected

redhat

enterprise_linux

qemu

qemu

CWE

CWE-763

Release of Invalid Pointer or Reference

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