Security Bulletin: Apache CXF vulnerability identified in IBM Tivoli Application Dependency Discovery Manager (CVE-2021-22696)

Security Bulletin

Summary

This security bulletin addresses the vulnerability in Open Source Apache CXF that affect IBM Tivoli Application Dependency Discovery Manager.

Vulnerability Details

CVEID: CVE-2021-22696
DESCRIPTION: Apache CXF is vulnerable to a denial of service, caused by improper validation of request_uri parameter by the OAuth 2 authorization service. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition on the authorization server.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199335 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)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Tivoli Application Dependency Discovery Manager	7.3.0.0-7.3.0.8

Remediation/Fixes

TADDM 7.3.0.5 and 7.3.0.8 : The eFix in the table below can be downloaded and applied directly.

TADDM 7.3.0.6 and 7.3.0.7 : If there are existing eFixes on these versions (ls -lrt etc/efix*), please contact IBM support and open a case for a custom version of the eFixes. Include the current eFix level (ls -lrt etc.efix*), TADDM version and a link to this bulletin. The eFix in the table below is created to be installed on the respective FixPacks only if there are no previously applied eFixes.

Fix	VRMF	APAR	How to acquire fix
efix_CXF_CVE-2021-22696_FP5180802.zip	7.3.0.5	None	Download eFix
efix_CXF_CVE-2021-22696_FP6190313.zip	7.3.0.6	None	Download eFix
efix_CXF_CVE-2021-22696_FP7200218.zip	7.3.0.7	None	Download eFix
efix_CXF_CVE-2021-22696_FP8201126.zip	7.3.0.8	None	Download eFix

Note: Before TADDM 7.3.0.5, Java 7 was used and this CXF fix is applicable to Java8. Hence, no eFix can be provided for versions before 7.3.0.5

Workarounds and Mitigations

For customers on TADDM 7.3.0.3 or 7.3.0.4, recommendation is to upgrade to the latest version and then apply the efix directly.

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

04 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: Apache CXF vulnerability identified in IBM Tivoli Application Dependency Discovery Manager (CVE-2021-22696)