Security Bulletin
Summary
IBM App Connect Enterprise & IBM Integration Bus are vulnerable to a denial of service due to Eclipse Mosquitto (CVE-2021-41039, CVE-2021-34432, CVE-2021-34431) The fix includes Eclipse Mosquitto v2.0.15
Vulnerability Details
CVEID: CVE-2021-41039
DESCRIPTION: Eclipse Mosquitto is vulnerable to a denial of service, caused by improper input validation. By sending specially-crafted CONNECT packets containing lots of "user properties", a remote attacker could exploit this vulnerability to cause excessive CPU usage and loss of performance, and results in a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/214367 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-2021-34432
DESCRIPTION: Eclipse Mosquitto is vulnerable to a denial of service, caused by improper input validation. By sending a PUBLISH packet with zero value of length topic, a remote authenticated attacker could exploit this vulnerability to cause the server to crash.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/206468 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2021-34431
DESCRIPTION: Eclipse Mosquitto is vulnerable to a denial of service, caused by a memory leak flaw in the broker. By sending a specially-crafted CONNECT message, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/206314 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM App Connect Enterprise | 12.0.1.0 - 12.0.8.0 |
| IBM App Connect Enterprise | 11.0.0.0 - 11.0.0.20 |
| IBM Integration Bus | 10.1 |
| IBM Integration Bus | 10.0.0.0 - 10.0.0.26 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability/vulnerabilities now by applying the appropriate fix to IBM App Connect Enterprise & IBM Integration Bus
|
Product(s) |
Version(s) |
APAR |
Remediation / Fix |
|
IBM App Connect Enterprise |
v12.0.1.0 - v12.0.8.0 |
IT43353 |
Interim fix for APAR (IT43353) is available to apply to 12.0.8.0 from |
|
IBM App Connect Enterprise |
v11.0.0.0 -v11.0.0.20 |
IT43353 |
Interim fix for APAR (IT43353) is available to apply to 11.0.0.20 from |
|
IBM Integration Bus |
v10.1 |
IT43353 |
Interim fix for APAR (IT43353) is available to apply to 10.1 from |
|
IBM Integration Bus |
v10.0.0.0 -v10.0.0.26 |
IT43353 |
Interim fix for APAR (IT43353) is available to apply to 10.0.0.26 from |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
10 Mar 2023: 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
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
27 April 2023
UID
ibm16986627