Security Bulletin: IBM WebSphere Application Server Liberty for IBM i is vulnerable to identity spoofing with authenticated user and ability to bypass security restrictions due to Eclipse Paho Java client (CVE-2019-11777, CVE-2022-22476)

Security Bulletin

Summary

IBM WebSphere Application Server Liberty for IBM i is vulnerable to identity spoofing by an authenticated user (CVE-2022-22476) and the ability to bypass security restrictions due to Eclipse Paho Java client (CVE-2019-11777) as described in the vulnerability details section. IBM i has addressed the CVEs by providing fixes to IBM WebSphere Application Server Liberty for IBM i as described in the remediation/fixes section.

Vulnerability Details

CVEID: CVE-2022-22476
DESCRIPTION: IBM WebSphere Application Server Liberty 17.0.0.3 through 22.0.0.7 and Open Liberty are vulnerable to identity spoofing by an authenticated user using a specially crafted request. IBM X-Force ID: 225604.
CVSS Base score: 5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/225604 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)

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

Affected Product(s)	Version(s)
IBM i	7.5
IBM i	7.4
IBM i	7.3
IBM i	7.2

Remediation/Fixes

The issues can be fixed by applying a PTF to IBM i. IBM i releases 7.5, 7.4, 7.3, and 7.2 will be fixed.

The IBM i PTF numbers contain the fixes for the vulnerabilities.

IBM i Release	5770-SS1 PTF Number	PTF Download Link
7.5	SI80972	SI80972
7.4	SI80973	SI80973
7.3	SI80974	SI80974
7.2	SI80975	SI80975

https://www.ibm.com/support/fixcentral

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

12 Sep 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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Tips

Security Bulletin: IBM WebSphere Application Server Liberty for IBM i is vulnerable to identity spoofing with authenticated user and ability to bypass security restrictions due to Eclipse Paho Java client (CVE-2019-11777, CVE-2022-22476)