Security Bulletin
Summary
There is a vulnerability in the Eclipse Paho library used by Liberty for Java for IBM Cloud with the rtcomm-1.0 or rtcommGateway-1.0 feature enabled. This has been addressed.
Vulnerability Details
CVEID: CVE-2019-11777
DESCRIPTION: Eclipse Paho Java client could allow a remote attacker to bypass security restrictions, caused by the failure to check the result when connecting to an MQTT server using TLS and setting a host name verifier. By sending a specially-crafted request, an attacker could exploit this vulnerability to allow one MQTT server to impersonate another and provide the client library with incorrect information.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/167068 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
These vulnerabilities affect all versions of Liberty for Java for IBM Cloud up to and including v3.72.
Remediation/Fixes
To upgrade to Liberty for Java for IBM Cloud v3.73-20220816-0814 or higher, you must re-stage or re-push your application.
To find the current version of Liberty for Java for IBM Cloud being used, from the command-line Cloud Foundry client by running the following commands:
cf ssh <appname> -c "cat staging_info.yml"
Look for similar lines:
{“detected_buildpack”:“Liberty for Java(TM) (WAR, liberty-xxx, 3.73-20220816-0814, xxx, env)“,”start_command”:“.liberty/initial_startup.rb”}
To re-stage your application using the command-line Cloud Foundry client, use the following command:
cf restage <appname>
To re-push your application using the command-line Cloud Foundry client, use the following command:
cf push <appname>
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
30 Aug 2022: 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:
07 October 2022
UID
ibm16616659