PT-2020-6474 · Qemu+8 · Qemu+8

Alexander Bulekov · Published 2020-05-02 · Updated 2022-09-23 · CVE-2020-15859

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions QEMU version 4.2.0

Description The issue is related to a use-after-free in the e1000e core of QEMU's hardware emulation, specifically in the hw/net/e1000e core.c file. This can be triggered by a guest OS user sending an e1000e packet with its data address set to the e1000e's MMIO address, potentially leading to a denial of service.

Recommendations For QEMU version 4.2.0, consider disabling the e1000e core functionality until a patch is available to prevent potential exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2021:4191

ALT-PU-2020-1912

ALT-PU-2020-2431

BDU:2021-05192

CESA-2021_4191

CVE-2020-15859

DLA-2560-1

DLA-3099-1

RHSA-2021:4191

RHSA-2021_4191

RLSA-2021:4191

USN-4725-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Qemu

Red Hat

Rocky Linux

Ubuntu

References · 64

• 🔥 https://bugs.launchpad.net/qemu/+bug/1886362 · Exploit
• https://ubuntu.com/security/CVE-2020-15859 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-11947 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2560-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4725-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202208-27 · Vendor Advisory
• https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.html · Patch
• https://osv.dev/vulnerability/RLSA-2021:4191 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3099-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05192 · Security Note
• https://osv.dev/vulnerability/CVE-2020-15859 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-15859 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-15859 · Security Note
• https://errata.almalinux.org/8/ALSA-2021-4191.html · Vendor Advisory