Security Bulletin: Security vulnerabilities in IBM SDK for Node.js might affect the configuration editor used by IBM Business Automation Workflow and IBM Business Process Manager (BPM)

Summary

Security vulnerabilities have been reported for IBM SDK for Node.js. IBM Business Automation Workflow and IBM BPM include a stand-alone tool for editing configuration properties files that is based on IBM SDK for Node.js.

Vulnerability Details

CVEID:CVE-2021-22918
**DESCRIPTION:**Node.js is vulnerable to a denial of service, caused by an out-of-bounds read in the libuv's uv__idna_toascii() function. By invoking the function using dns module's lookup() function, a remote attacker could exploit this vulnerability to obtain sensitive information or cause a denial of service.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/204784 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)

CVEID:CVE-2021-22921
**DESCRIPTION:**Node.js could allow a local attacker to gain elevated privileges on the system, caused by improper configuration of permissions in the installation directory. Under certain conditions. An attacker could exploit this vulnerability to perform PATH and DLL hijacking attacks.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/204785 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2021-22939
**DESCRIPTION:**Node.js could allow a remote attacker to bypass security restrictions. If the https API was used incorrectly and "undefined" was in passed for the "rejectUnauthorized" parameter, an attacker could exploit this vulnerability to connect to servers using an expired certificate.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/207233 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2021-22931
**DESCRIPTION:**Node.js could provide weaker than expected security, caused by missing input validation on hostnames returned by DNS servers. An attacker could exploit this vulnerability to cause output of wrong hostnames leading to Domain Hijacking and and injection vulnerabilities in applications using the library.
CVSS Base score: 5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/207230 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L)

CVEID:CVE-2021-22940
**DESCRIPTION:**Node.js could allow a remote attacker to bypass security restrictions, caused by an incomplete fix for CVE-2021-22930 related to a use-after-free on close http2 on stream canceling. An attacker could exploit this vulnerability to corrupt memory to change process behavior.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/207520 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

CVEID:CVE-2021-22930
**DESCRIPTION:**Node.js could allow a remote attacker to bypass security restrictions, caused by a use-after-free on close http2 on stream canceling. An attacker could exploit this vulnerability to corrupt memory to change process behavior.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/206473 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

For earlier and unsupported versions of the products, IBM recommends upgrading to a fixed, supported version of the product.

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR JR64015 as soon as practical:

• IBM Business Automation Workflow (including fix for IBM Business Process Manager V8.6.0.0 2018.03)
• IBM Business Process Manager Advanced
• IBM Business Process Manager Standard
• IBM Business Process Manager Express

For IBM Business Automation Workflow V18.0, V19.0, V20.0, V21.0
· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR64015
--OR–
· Apply cumulative fix Business Automation Workflow V21.0.3 or later

For IBM Business Process Manager V8.6
· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR64015
--OR–
· Upgrade to Business Automation Workflow V21.0.3 or later

For IBM BPM V8.5
· Upgrade to IBM BPM V8.5.7, apply Cumulative Fix 2017.06 and then apply iFix JR64015
--OR–
· Upgrade to Business Automation Workflow V21.0.3 or later

Workarounds and Mitigations

Use a text editor to work with the BPM configuration .properties.