SUSE update for xen



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
 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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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-LTSS - 12-SP3-BCL

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

CPE2.3 External links

https://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.



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