Security Bulletin: IBM Sterling B2B Integrator is vulnerable to multiple vulnerabilities due to Xstream

Security Bulletin

Summary

Xstream is used by IBM Sterling B2B Integrator. Multiple Xstream vulnerabilities have been addressed.

Vulnerability Details

CVEID: CVE-2021-39141
DESCRIPTION: XStream could allow a remote authenticated attacker to execute arbitrary code on the system, caused by an unsafe deserialization flaw. By manipulating the processed input stream, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208111 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

CVEID: CVE-2021-39144
DESCRIPTION: XStream could allow a remote authenticated attacker to execute arbitrary commands on the system, caused by an unsafe deserialization flaw. By manipulating the processed input stream, an attacker could exploit this vulnerability to execute arbitrary commands on the system.
CVSS Base score: 8.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208112 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

CVEID: CVE-2021-39146
DESCRIPTION: XStream could allow a remote authenticated attacker to execute arbitrary code on the system, caused by an unsafe deserialization flaw. By manipulating the processed input stream, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208114 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

CVEID: CVE-2021-39145
DESCRIPTION: XStream could allow a remote authenticated attacker to execute arbitrary code on the system, caused by an unsafe deserialization flaw. By manipulating the processed input stream, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208113 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)	APAR(s)	Version(s)
IBM Sterling B2B Integrator	IT38877	6.0.0.0 - 6.0.3.5
IBM Sterling B2B Integrator	IT38877	6.1.0.0 - 6.1.1.0

Remediation/Fixes

Product(s)	Version(s)	Remediation/Fix
IBM Sterling B2B Integrator	6.0.0.0 - 6.0.3.5	Apply IBM Sterling B2B Integrator version 6.0.3.6 on Fix Central
IBM Sterling B2B Integrator	6.1.0.0 - 6.1.1.0	Apply IBM Sterling B2B Integrator version 6.1.1.1 on Fix Central

Note that the fix may also be present in other releases. This can be verified by looking for the APAR number on the Fix List page

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

18 Apr 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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Security Bulletin: IBM Sterling B2B Integrator is vulnerable to multiple vulnerabilities due to Xstream