CVE-2021-3682

 

Published at: - 05-08-2021 10:15

Last modified: - 25-10-2022 10:28

Total changes: - 12

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1989651
• https://security.netapp.com/advisory/ntap-20210902-0006/
• [debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update-Third Party Advisory
• DSA-4980-Third Party Advisory
• GLSA-202208-27-Third Party Advisory
• [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2021-3682

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures