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

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

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.