SUSE update for samba and ldb

Published: 2021-11-10

Risk	High
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2016-2124 CVE-2020-17049 CVE-2020-25717 CVE-2020-25718 CVE-2020-25719 CVE-2020-25721 CVE-2020-25722 CVE-2021-23192 CVE-2021-3738
CWE-ID	CWE-284 CWE-254 CWE-264 CWE-362 CWE-287 CWE-20 CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Module for Python2 Operating systems & Components / Operating system SUSE Linux Enterprise High Availability Operating systems & Components / Operating system SUSE MicroOS Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system libldb2-32bit-debuginfo Operating systems & Components / Operating system package or component libldb2-32bit Operating systems & Components / Operating system package or component python3-ldb-devel Operating systems & Components / Operating system package or component python3-ldb-debuginfo Operating systems & Components / Operating system package or component python3-ldb Operating systems & Components / Operating system package or component libldb-devel Operating systems & Components / Operating system package or component ldb-tools-debuginfo Operating systems & Components / Operating system package or component ldb-tools Operating systems & Components / Operating system package or component libldb2-debuginfo Operating systems & Components / Operating system package or component libldb2 Operating systems & Components / Operating system package or component ldb-debugsource Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU58098

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-2016-2124

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to SMB1 client connections can be downgraded to plaintext authentication. A remote attacker can perform a man-in-the-middle attack and downgrade a negotiated SMB1 client connection and its capabitilities.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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) Security Features

EUVDB-ID: #VU48269

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-17049

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote user to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Kerberos. A remote administrator can bypass authentication process and gain unauthorized access to the application.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58097

Risk: Medium

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

CVE-ID: CVE-2020-25717

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the Windows Active Directory (AD) domains have by default a feature to allow users to create computer accounts. A remote authenticated attacker can create such account with elevated privileges on the system.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58096

Risk: Medium

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

CVE-ID: CVE-2020-25718

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to Samba AD DC does not correctly sandbox Kerberos tickets issued by an RODC, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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) Race condition

EUVDB-ID: #VU58095

Risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25719

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition. A remote administrator can exploit the race and escalate privileges on the system.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

6) Improper Authentication

EUVDB-ID: #VU58094

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25721

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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.

7) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58093

Risk: Medium

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

CVE-ID: CVE-2020-25722

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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.

8) Input validation error

EUVDB-ID: #VU58091

Risk: Medium

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

CVE-ID: CVE-2021-23192

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the DCE/RPC fragment injection issue. A remote attacker can replace subsequent fragments in requests with their own data and alter the server behavior.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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.

9) Use-after-free

EUVDB-ID: #VU58092

Risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3738

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 Samba AD DC RPC server. A remote authenticated attacker can gain elevated privileges and perform a denial of service (DoS) attack.

Mitigation

Update the affected package samba and ldb to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE MicroOS: 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libldb2-32bit-debuginfo: before 2.2.2-3.3.1

libldb2-32bit: before 2.2.2-3.3.1

python3-ldb-devel: before 2.2.2-3.3.1

python3-ldb-debuginfo: before 2.2.2-3.3.1

python3-ldb: before 2.2.2-3.3.1

libldb-devel: before 2.2.2-3.3.1

ldb-tools-debuginfo: before 2.2.2-3.3.1

ldb-tools: before 2.2.2-3.3.1

libldb2-debuginfo: before 2.2.2-3.3.1

libldb2: before 2.2.2-3.3.1

ldb-debugsource: before 2.2.2-3.3.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213647-1/

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.