## Summary

IBM Cloud Transformation Advisor has addressed multiple Node.js vulnerabilities.

## Vulnerability Details

** 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-2021-22939]()
** 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-2021-22918]()
** 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-2021-22940]()
** 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)

** Third Party Entry: **207314
** DESCRIPTION: **Node.js validator module is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) flaw when checking if the malicious string is a hsl. By sending a specially-crafted string using the isHSL function, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 5.3
CVSS Temporal Score: See: [https://exchange.xforce.ibmcloud.com/vulnerabilities/207314 ]() for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

## Affected Products and Versions

Affected Product(s)| Version(s)
—|—
IBM Cloud Transformation Advisor| 2.4.4

## Remediation/Fixes

Upgrade to 2.5.0 or later.

IBM Cloud Transformation Advisor can be installed from OperatorHub page in Red Hat OpenShift Container Platform or locally following this [link]( “link” ).

## Workarounds and Mitigations

None

## Get Notified about Future Security Bulletins

Subscribe to [My Notifications]() to be notified of important product support alerts like this.

### References

[Complete CVSS v3 Guide]( “Link resides outside of ibm.com” )
[On-line Calculator v3]( “Link resides outside of ibm.com” )

Off

## Related Information

[IBM Secure Engineering Web Portal]()
[IBM Product Security Incident Response Blog]()

## Change History

29 Sep 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

## Disclaimer

Review the [IBM security bulletin disclaimer and definitions]() regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

## Document Location

Worldwide

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