CVE-2016-6040 IBM CVE debrief

Who should care

Administrators and security teams running IBM Jazz Foundation or the IBM Rational Collaborative Lifecycle Management versions listed in NVD should review this issue, especially where shared workspaces, persistent browser sessions, or long-lived authenticated sessions are used.

Technical summary

The core issue is failure to enforce proper session expiration. In the supplied NVD description, that can permit an authenticated user to assume control of a previously logged-in user’s session. NVD maps the weakness to CWE-384 and reports CVSS 3.0 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L, which indicates network reachability, some attack complexity, and limited impact. The NVD cpe criteria enumerate affected IBM Rational Collaborative Lifecycle Management releases 4.0.0 through 6.0.2.

Defensive priority

Medium. This is an important account/session integrity issue, but the provided data does not indicate active exploitation or inclusion in CISA KEV.

Recommended defensive actions

• Review IBM’s vendor advisory and patch guidance for the affected releases listed in NVD.
• Apply the vendor patch or update referenced by IBM support as soon as practical.
• Audit session timeout and logout behavior to ensure sessions expire reliably after inactivity or logout.
• Verify that shared terminals, kiosks, and browser auto-fill/password managers do not preserve unintended authenticated access.
• Monitor for unusual account switching, session reuse, or identity-confusion events in application logs.

Evidence notes

The debrief is based only on the supplied NVD record and the IBM reference links included there. NVD describes the flaw as an authenticated-user takeover risk due to unenforced session expiration, and identifies CWE-384. The NVD record also lists affected IBM Rational Collaborative Lifecycle Management versions 4.0.0 through 6.0.2. No additional exploitation details were used.

Official resources