SUSE update for openvswitch

Published: 2023-06-02

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2021-36980 CVE-2022-32166 CVE-2022-4337 CVE-2022-4338
CWE-ID	CWE-416 CWE-125 CWE-191
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Applications 12 Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 SP4 LTSS Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 SP4 ESPOS Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 12 Operating systems & Components / Operating system SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system libopenvswitch-2_8-0-debuginfo Operating systems & Components / Operating system package or component openvswitch-debuginfo Operating systems & Components / Operating system package or component openvswitch Operating systems & Components / Operating system package or component libopenvswitch-2_8-0 Operating systems & Components / Operating system package or component openvswitch-debugsource Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU55006

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-36980

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action. A remote attacker can send a specially crafted request to the system, trigger a use-after-free error and execute arbitrary code.

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

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP4

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP4

SUSE Linux Enterprise High Performance Computing 12: SP4

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

libopenvswitch-2_8-0-debuginfo: before 2.8.10-4.33.1

openvswitch-debuginfo: before 2.8.10-4.33.1

openvswitch: before 2.8.10-4.33.1

libopenvswitch-2_8-0: before 2.8.10-4.33.1

openvswitch-debugsource: before 2.8.10-4.33.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232360-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Out-of-bounds read

EUVDB-ID: #VU68717

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32166

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

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 condition within the minimasks() function in flow.c. A remote attacker can pass specially crafted data to the application, trigger an out-of-bounds read error and crash the service.

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP4

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP4

SUSE Linux Enterprise High Performance Computing 12: SP4

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

libopenvswitch-2_8-0-debuginfo: before 2.8.10-4.33.1

openvswitch-debuginfo: before 2.8.10-4.33.1

openvswitch: before 2.8.10-4.33.1

libopenvswitch-2_8-0: before 2.8.10-4.33.1

openvswitch-debugsource: before 2.8.10-4.33.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232360-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Out-of-bounds read

EUVDB-ID: #VU70471

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4337

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an out-of-bounds read error and read contents of memory on the system of perform a denial of service (DoS) attack.

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP4

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP4

SUSE Linux Enterprise High Performance Computing 12: SP4

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

libopenvswitch-2_8-0-debuginfo: before 2.8.10-4.33.1

openvswitch-debuginfo: before 2.8.10-4.33.1

openvswitch: before 2.8.10-4.33.1

libopenvswitch-2_8-0: before 2.8.10-4.33.1

openvswitch-debugsource: before 2.8.10-4.33.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232360-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Integer underflow

EUVDB-ID: #VU70459

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4338

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, by default interfaces are not configured to process LLDP messages.

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 12: SP4

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP4

SUSE Linux Enterprise High Performance Computing 12: SP4

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

libopenvswitch-2_8-0-debuginfo: before 2.8.10-4.33.1

openvswitch-debuginfo: before 2.8.10-4.33.1

openvswitch: before 2.8.10-4.33.1

libopenvswitch-2_8-0: before 2.8.10-4.33.1

openvswitch-debugsource: before 2.8.10-4.33.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232360-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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