CVE-2020-14364
Published: 24 August 2020
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
trusty |
Released
(2.0.0+dfsg-2ubuntu1.47+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| hirsute |
Released
(1:5.0-5ubuntu9)
|
|
| upstream |
Needs triage
|
|
| bionic |
Released
(1:2.11+dfsg-1ubuntu7.32)
|
|
| focal |
Released
(1:4.2-3ubuntu6.6)
|
|
| xenial |
Released
(1:2.5+dfsg-5ubuntu10.46)
|
|
| groovy |
Released
(1:5.0-5ubuntu9)
|
|
|
Patches: other: https://www.openwall.com/lists/oss-security/2020/08/24/3/1 upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=b946434f2659a182afc17e155be6791ebfb302eb |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
hirsute |
Does not exist
|
| upstream |
Needs triage
|
|
| trusty |
Does not exist
|
|
| bionic |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| xenial |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.0 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L |