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CVE-2020-14364

Publication date 24 August 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.0 · Medium

Score breakdown

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.

Status

Package Ubuntu Release Status
qemu 21.04 hirsute
Fixed 1:5.0-5ubuntu9
20.10 groovy
Fixed 1:5.0-5ubuntu9
20.04 LTS focal
Fixed 1:4.2-3ubuntu6.6
18.04 LTS bionic
Fixed 1:2.11+dfsg-1ubuntu7.32
16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.46
14.04 LTS trusty
qemu-kvm 21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

Parameter Value
Base score 5.0 · Medium
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

References

Related Ubuntu Security Notices (USN)

Other references