CVE-2021-3545

Debian Security Advisory 4980-1

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An information disclosure vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw exists in virgl_cmd_get_capset_info() in contrib/vhost-user-gpu/virgl.c and could occur due to the read of uninitialized memory. A malicious guest could exploit this issue to leak memory from the host.

Se ha encontrado una vulnerabilidad de divulgación de información en el dispositivo GPU virtio vhost-user (vhost-user-gpu) de QEMU en las versiones hasta 6.0 incluyéndola. El fallo se presenta en la función virgl_cmd_get_capset_info() en el archivo contrib/vhost-user-gpu/virgl.c y podría ocurrir debido a una lectura de memoria no inicializada. Un invitado malicioso podría explotar este problema para filtrar la memoria desde el host

Lei Sun discovered that QEMU incorrectly handled certain MMIO operations. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.04. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-10 CVE Reserved
2021-06-02 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-908: Use of Uninitialized Resource

CAPEC

References (5)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2021/05/31/1	Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=1958955	Issue Tracking
https://security.netapp.com/advisory/ntap-20210720-0008	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202208-27	2023-11-07
https://www.debian.org/security/2021/dsa-4980	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"				<= 6.0.0 Search vendor "Qemu" for product "Qemu" and version " <= 6.0.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected