Security Bulletin
Summary
App Connect Enterprise Certified Container may be vulnerable to denial of service attacks due to CVE-2021-23840, CVE-2021-22883 and CVE-2021-22884 in the Node.js runtime used by the Dashboard and Designer UIs and by the Integration Server runtime when running App Connect Enterprise flows
Vulnerability Details
CVEID: CVE-2021-23840
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an integer overflow in CipherUpdate. By sending an overly long argument, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196848 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2021-22884
DESCRIPTION: Node.js is vulnerable to a denial of service, caused by an error when the allowlist includes "localhost6". By controlling the victim's DNS server or spoofing its responses, an attacker could exploit this vulnerability to bypass the DNS rebinding protection mechanism using the "localhost6" domain and cause a denial of service.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197191 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H)
CVEID: CVE-2021-22883
DESCRIPTION: Node.js is vulnerable to a denial of service, caused by a file descriptor leak. By making multiple attempts to connect with an 'unknownProtocol', an attacker could exploit this vulnerability to lead to an excessive memory usage and cause the system to run out of memory.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197190 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| App Connect Enterprise Certified Container | 1.0 with Operator |
| App Connect Enterprise Certified Container | 1.1 with Operator |
| App Connect Enterprise Certified Container | 1.2 with Operator |
| App Connect Enterprise Certified Container | 1.3 with Operator |
Remediation/Fixes
App Connect Enterprise Certified Container 1.0, 1.2 and 1.3 CD
Upgrade to App Connect Enterprise Certified Container to Operator version 1.4.0 (available in CASE 1.4.0) or higher, and ensure that all components are at 11.0.0.12-r1 or higher.
App Connect Enterprise Certified Container 1.1 LTS
Upgrade to App Connect Enterprise Certified Container Operator version 1.1.1 EUS (available in CASE 1.1.1) or higher, and ensure that all components are at 11.0.0.12-r1-eus or higher.
Workarounds and Mitigations
None
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References
Change History
30 Apr 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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Document Information
Modified date:
30 April 2021
Initial Publish date:
30 April 2021
UID
ibm16448842