CVE-2020-14364
Medium
Description
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.
SeverityMedium
CVSS5.0
Exploit probability—
Product
Qemu
PublishedAug 31, 2020
First seenAug 31, 2020
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- qemu qemu5.2.0 or later
Vendor advisories
- debian.org/security/2020/dsa-4760
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/
- usn.ubuntu.com/4511-1/
- security.gentoo.org/glsa/202009-14
- security.gentoo.org/glsa/202011-09
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | v < 5.2.0 | 5.2.0 |
| redhat openstack | 10, 13 | — |
| redhat enterprise_linux | 6.0, 7.0, 8.0 | — |
| fedoraproject fedora | 31, 32 | — |
| debian debian_linux | 9.0, 10.0 | — |
| opensuse leap | 15.2 | — |
| canonical ubuntu_linux | 16.04, 18.04, 20.04 | — |
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