SUSE update for qemu

1) Out-of-bounds write

EUVDB-ID: #VU63779

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3713

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the UAS (USB Attached SCSI) device emulation of QEMU. A local user can perform a denial of service or escalate privileges on the system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP3-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud: 8

qemu-s390-debuginfo: before 2.9.1-43.62.1

qemu-s390: before 2.9.1-43.62.1

qemu-arm-debuginfo: before 2.9.1-43.62.1

qemu-arm: before 2.9.1-43.62.1

qemu-ppc-debuginfo: before 2.9.1-43.62.1

qemu-ppc: before 2.9.1-43.62.1

qemu-sgabios: before 8-43.62.1

qemu-x86-debuginfo: before 2.9.1-43.62.1

qemu-x86: before 2.9.1-43.62.1

qemu-tools-debuginfo: before 2.9.1-43.62.1

qemu-tools: before 2.9.1-43.62.1

qemu-lang: before 2.9.1-43.62.1

qemu-kvm: before 2.9.1-43.62.1

qemu-guest-agent-debuginfo: before 2.9.1-43.62.1

qemu-guest-agent: before 2.9.1-43.62.1

qemu-debugsource: before 2.9.1-43.62.1

qemu-block-ssh-debuginfo: before 2.9.1-43.62.1

qemu-block-ssh: before 2.9.1-43.62.1

qemu-block-rbd-debuginfo: before 2.9.1-43.62.1

qemu-block-rbd: before 2.9.1-43.62.1

qemu-block-iscsi-debuginfo: before 2.9.1-43.62.1

qemu-block-iscsi: before 2.9.1-43.62.1

qemu-block-curl-debuginfo: before 2.9.1-43.62.1

qemu-block-curl: before 2.9.1-43.62.1

qemu: before 2.9.1-43.62.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213653-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

2) Use-after-free

EUVDB-ID: #VU58813

Risk: High

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3748

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote guest to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when in the virtio-net device of QEMU. A malicious guest can trigger the use-after-free error and execute arbitrary code on the host system with QEMU privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP3-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud: 8

qemu-s390-debuginfo: before 2.9.1-43.62.1

qemu-s390: before 2.9.1-43.62.1

qemu-arm-debuginfo: before 2.9.1-43.62.1

qemu-arm: before 2.9.1-43.62.1

qemu-ppc-debuginfo: before 2.9.1-43.62.1

qemu-ppc: before 2.9.1-43.62.1

qemu-sgabios: before 8-43.62.1

qemu-x86-debuginfo: before 2.9.1-43.62.1

qemu-x86: before 2.9.1-43.62.1

qemu-tools-debuginfo: before 2.9.1-43.62.1

qemu-tools: before 2.9.1-43.62.1

qemu-lang: before 2.9.1-43.62.1

qemu-kvm: before 2.9.1-43.62.1

qemu-guest-agent-debuginfo: before 2.9.1-43.62.1

qemu-guest-agent: before 2.9.1-43.62.1

qemu-debugsource: before 2.9.1-43.62.1

qemu-block-ssh-debuginfo: before 2.9.1-43.62.1

qemu-block-ssh: before 2.9.1-43.62.1

qemu-block-rbd-debuginfo: before 2.9.1-43.62.1

qemu-block-rbd: before 2.9.1-43.62.1

qemu-block-iscsi-debuginfo: before 2.9.1-43.62.1

qemu-block-iscsi: before 2.9.1-43.62.1

qemu-block-curl-debuginfo: before 2.9.1-43.62.1

qemu-block-curl: before 2.9.1-43.62.1

qemu: before 2.9.1-43.62.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213653-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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