SUSE update for xen

Published: 2021-12-01

Risk	Medium
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2021-28704 CVE-2021-28705 CVE-2021-28706 CVE-2021-28707 CVE-2021-28708 CVE-2021-28709
CWE-ID	CWE-20 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system HPE Helion Openstack Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system xen-tools-domU-debuginfo Operating systems & Components / Operating system package or component xen-tools-domU Operating systems & Components / Operating system package or component xen-tools-debuginfo Operating systems & Components / Operating system package or component xen-tools Operating systems & Components / Operating system package or component xen-libs-debuginfo Operating systems & Components / Operating system package or component xen-libs-debuginfo-32bit Operating systems & Components / Operating system package or component xen-libs Operating systems & Components / Operating system package or component xen-libs-32bit Operating systems & Components / Operating system package or component xen-doc-html Operating systems & Components / Operating system package or component xen-debugsource Operating systems & Components / Operating system package or component xen Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU58344

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28704

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an error in XENMEM_decrease_reservation operation. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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) Input validation error

EUVDB-ID: #VU58351

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28705

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in page removal code path. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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.

3) Buffer overflow

EUVDB-ID: #VU58342

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28706

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error. A remote authenticated attacker can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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.

4) Input validation error

EUVDB-ID: #VU58345

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28707

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an error in XENMEM_populate_physmap operation. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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.

5) Input validation error

EUVDB-ID: #VU58346

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28708

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an error in ENMEM_decrease_reservation operation. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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.

6) Input validation error

EUVDB-ID: #VU58352

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28709

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in insertion of new pages code path. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package xen 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

xen-tools-domU-debuginfo: before 4.9.4_24-3.97.1

xen-tools-domU: before 4.9.4_24-3.97.1

xen-tools-debuginfo: before 4.9.4_24-3.97.1

xen-tools: before 4.9.4_24-3.97.1

xen-libs-debuginfo: before 4.9.4_24-3.97.1

xen-libs-debuginfo-32bit: before 4.9.4_24-3.97.1

xen-libs: before 4.9.4_24-3.97.1

xen-libs-32bit: before 4.9.4_24-3.97.1

xen-doc-html: before 4.9.4_24-3.97.1

xen-debugsource: before 4.9.4_24-3.97.1

xen: before 4.9.4_24-3.97.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213851-1/

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.