CVE-2020-15863

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.

El archivo hw/net/xgmac.c en el controlador Ethernet XGMAC en QEMU antes del 20/07/2020, presenta un desbordamiento de búfer. Esto ocurre durante la transmisión de paquetes y afecta a las máquinas emuladas highbank y midway. Un usuario o proceso invitado podría usar este fallo para bloquear el proceso QEMU en el host, resultando en una denegación de servicio o una posible ejecución de código privilegiado. Esto se corrigió en commit 5519724a13664b43e225ca05351c60b4468e4555

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-07-21 CVE Reserved
2020-07-28 CVE Published
2024-08-04 CVE Updated
2024-08-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (8)

URL	Tag	Source
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=5519724a13664b43e225ca05351c60b4468e4555	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2020/07/22/1	2023-11-07
https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.html	2023-11-07
https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.html	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html	2023-11-07
https://security.gentoo.org/glsa/202208-27	2023-11-07
https://usn.ubuntu.com/4467-1	2023-11-07
https://www.debian.org/security/2020/dsa-4760	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				<= 5.0.0 Search vendor "Qemu" for product "Qemu" and version " <= 5.0.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				5.1.0 Search vendor "Qemu" for product "Qemu" and version "5.1.0"		rc0		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected