Vulnerability CVE-2020-4320 - CERT Civis.Net

Vulnerability Name:

CVE-2020-4320 (CCN-177403)

Assigned:

2019-12-30

Published:

2020-06-15

Updated:

2020-06-23

Summary:

IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificate distinguished name SSLPEER setting. IBM X-Force ID: 177403.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: 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)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2020-4320

Source: XF
Type: UNKNOWN
ibm-mq-cve20204320-dos(177403)

Source: XF
Type: VDB Entry, Vendor Advisory
ibm-mq-cve20204320-dos (177403)

Source: CCN
Type: IBM Security Bulletin 5736885 (MQ)
IBM MQ AMQP channels fail to block connections restricted by SSLPEER setting (CVE-2020-4320)

Source: CONFIRM
Type: Vendor Advisory
https://www.ibm.com/support/pages/node/5736885

Source: CCN
Type: IBM Security Bulletin 6239368 (MQ Appliance)
IBM MQ AMQP channels fail to block connections restricted by SSLPEER setting (CVE-2020-4320)

Source: CCN
Type: IBM Security Bulletin 6453465 (Control Center)
Multiple IBM MQ Vulnerabilities Affect IBM Control Center

Source: CCN
Type: IBM Security Bulletin 6558536 (Global High Availability Mailbox)
Multiple IBM MQ vulnerabilities affect IBM Sterling Global Mailbox

Source: CCN
Type: IBM Security Bulletin 6954467 (Sterling B2B Integrator)
IBM Sterling B2B Integrator vulnerable to multiple issues due to IBM MQ.

Vulnerable Configuration:

Configuration 1:

cpe:/a:ibm:mq:*:*:*:*:*:*:*:* (Version >= 8.0.0.0 and < 8.0.0.15)

OR cpe:/a:ibm:mq:*:*:*:*:lts:*:*:* (Version >= 9.0.0.0 and < 9.0.0.10)

OR cpe:/a:ibm:mq:*:*:*:*:continuous_delivery:*:*:* (Version >= 9.1.0 and < 9.1.5)

OR cpe:/a:ibm:mq:*:*:*:*:lts:*:*:* (Version >= 9.1.0.0 and < 9.1.0.5)

AND

cpe:/o:hp:hp-ux:-:*:*:*:*:*:*:*

OR cpe:/o:ibm:aix:-:*:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows:-:*:*:*:*:*:*:*

OR cpe:/o:oracle:solaris:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:ibm:mq:8.0:*:*:*:*:*:*:*

AND

cpe:/a:ibm:mq_appliance:8.0.0.3:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.4:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.5:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.6:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.0:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.8:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.10:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.0.0:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.11:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.0.1:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.1:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.1:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.7:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.9:*:*:*:*:*:*:*

OR cpe:/a:ibm:sterling_b2b_integrator:6.0.0.0:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.12:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.0.2:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.2:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.0.3:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.3:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.13:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.0.4:*:*:*:*:*:*:*

OR cpe:/a:ibm:mq_appliance:9.1.4:*:*:*:continuous_delivery:*:*:*

OR cpe:/a:ibm:mq_appliance:8.0.0.14:*:*:*:*:*:*:*

OR cpe:/a:ibm:sterling_b2b_integrator:6.1.0.0:*:*:*:standard:*:*:*

OR cpe:/a:ibm:control_center:6.2.0.0:*:*:*:*:*:*:*

OR cpe:/a:ibm:sterling_b2b_integrator:6.1.2.0:*:*:*:standard:*:*:*

OR cpe:/a:ibm:sterling_b2b_integrator:6.0.3.7:*:*:*:standard:*:*:*

Denotes that component is vulnerable