Security Bulletin: IBM InfoSphere Information Server is affected by multiple vulnerabilities in XStream

Security Bulletin

Summary

Multiple vulnerabilities in XStream that is used by IBM InfoSphere Information Server were addressed.

Vulnerability Details

CVEID: CVE-2020-26217
DESCRIPTION: XStream could allow a remote attacker to execute arbitrary code on the system, caused by flaws in the XStream.java and SecurityVulnerabilityTest.java scripts. By manipulating the processed input stream, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/192210 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2020-26258
DESCRIPTION: XStream is vulnerable to server-side request forgery, caused by a flaw when unmarshalling. By manipulating the processed input stream, a remote attacker could exploit this vulnerability to obtain sensitive data.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/193525 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2020-26259
DESCRIPTION: XStream could allow a remote attacker to delete arbitrary files from the system, caused by improper input sanitization. By manipulating the processed input, an attacker could exploit this vulnerability to delete arbitrary files from the system.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/193524 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)
InfoSphere Information Server	11.7

Remediation/Fixes

*Product*	*VRMF*	*APAR*	*Remediation/First Fix*
InfoSphere Information Server, Information Server on Cloud	11.7	JR63071	--Apply InfoSphere Information Server version 11.7.1.0 --Apply InfoSphere Information Server version 11.7.1.0 Fix Pack 1 --Apply InfoSphere Information Server 11.7.1.1 Service Pack 1 For Red Hat 8 installations, contact IBM Customer support

Contact Technical Support:

In the United States and Canada dial 1-800-IBM-SERV
View the support contacts for other countries outside of the United States.
Electronically open a Service Request with Information Server Technical Support.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

07 May 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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Tips

Security Bulletin: IBM InfoSphere Information Server is affected by multiple vulnerabilities in XStream