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CVE-2020-14364

Date: August 31, 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.

Severity Score

Related Resources (20)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-14364
https://access.redhat.com/security/cve/CVE-2020-14364
https://nvd.nist.gov/vuln/detail/CVE-2020-14364
https://usn.ubuntu.com/4511-1/
https://security.netapp.com/advisory/ntap-20200924-0006/
https://www.debian.org/security/2020/dsa-4760
https://security.alpinelinux.org/vuln/CVE-2020-14364
https://security.gentoo.org/glsa/202011-09
https://security-tracker.debian.org/tracker/CVE-2020-14364
https://www.openwall.com/lists/oss-security/2020/08/24/3
https://www.openwall.com/lists/oss-security/2020/08/24/2
https://bugzilla.redhat.com/show_bug.cgi?id=1869201
https://security.gentoo.org/glsa/202009-14
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html
https://www.mend.io/vulnerability-database/CVE-2020-14364

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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