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CVE-2020-14364

Status Candidate

Overview

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.

Related Files

Debian Security Advisory 4760-1
Posted Sep 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4760-1 - Multiple security issues were discovered in QEMU, a fast processor emulator.

tags | advisory
systems | linux, debian
advisories | CVE-2020-12829, CVE-2020-14364, CVE-2020-15863, CVE-2020-16092
SHA-256 | 9ec9643bb7edebad1c8a64c425392f1a29bfedae27d77a06866086970cb042aa
Download | Favorite | View
Ubuntu Security Notice USN-4511-1
Posted Sep 17, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4511-1 - Ziming Zhang, Xiao Wei, Gonglei Arei, and Yanyu Zhang discovered that QEMU incorrectly handled certain USB packets. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-14364
SHA-256 | 29f0ce6dc911aa64415e4299d4a5e1afef2fe8b59eec9f60cac0085c95489148
Download | Favorite | View
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