CVE-2021-3682

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Summary:

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.

Reference Links(if available):

  • https://bugzilla.redhat.com/show_bug.cgi?id=1989651
  • https://security.netapp.com/advisory/ntap-20210902-0006/
  • https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html
  • https://www.debian.org/security/2021/dsa-4980
  • CVSS Score (if available)

    v2: / HIGHAV:N/AC:M/Au:S/C:P/I:P/A:P

    v3: / HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

    Links to Exploits(if available)

  • Available for Amazon Prime