SUSE update for qemu

Published: 2022-01-27

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-13253 CVE-2021-20196
CWE-ID	CWE-125 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Micro Operating systems & Components / Operating system qemu-x86-debuginfo Operating systems & Components / Operating system package or component qemu-x86 Operating systems & Components / Operating system package or component qemu-vgabios Operating systems & Components / Operating system package or component qemu-sgabios Operating systems & Components / Operating system package or component qemu-seabios Operating systems & Components / Operating system package or component qemu-ipxe Operating systems & Components / Operating system package or component qemu-arm-debuginfo Operating systems & Components / Operating system package or component qemu-arm Operating systems & Components / Operating system package or component qemu-tools-debuginfo Operating systems & Components / Operating system package or component qemu-tools Operating systems & Components / Operating system package or component qemu-debugsource Operating systems & Components / Operating system package or component qemu-debuginfo Operating systems & Components / Operating system package or component qemu Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU28283

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13253

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the SD Memory Card emulator while performing block write commands via sdhci_write() in QEMU. A remote user of guest operating system can trigger out-of-bounds read error and crash the QEMU process.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.0

qemu-x86-debuginfo: before 4.2.1-11.34.2

qemu-x86: before 4.2.1-11.34.2

qemu-vgabios: before 1.12.1+-11.34.2

qemu-sgabios: before 8-11.34.2

qemu-seabios: before 1.12.1+-11.34.2

qemu-ipxe: before 1.0.0+-11.34.2

qemu-arm-debuginfo: before 4.2.1-11.34.2

qemu-arm: before 4.2.1-11.34.2

qemu-tools-debuginfo: before 4.2.1-11.34.2

qemu-tools: before 4.2.1-11.34.2

qemu-debugsource: before 4.2.1-11.34.2

qemu-debuginfo: before 4.2.1-11.34.2

qemu: before 4.2.1-11.34.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220210-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU63775

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20196

CWE-ID: CWE-476 - NULL Pointer Dereference