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Security Bulletin: Bypass security restrictions in WebSphere Application Server (CVE-2016-0385)

Security Bulletin


Summary

There is a potential bypass security restriction vulnerability in IBM WebSphere Application Server. This will only occur in environments that have the webcontainer custom property HttpSessionIdReuse enabled.

Vulnerability Details

CVEID: CVE-2016-0385
DESCRIPTION:
IBM WebSphere Application Server could allow a remote attacker to bypass security restrictions caused by a buffer overflow. This could allow the attacker to view unauthorized data.
CVSS Base Score: 3.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112359 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere Application Server

  • Liberty
  • Version 9.0
  • Version 8.5.5
  • Version 8.5
  • Version 8.0
  • Version 7.0

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF containing APAR PI60026 for each named product as soon as practical.

For WebSphere Application Server:

For Liberty:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI60026
--OR--
· Apply Fix Pack 16.0.0.3 or later.

For V9.0.0.0:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI60026
--OR--
· Apply Fix Pack 9.0.0.1 or later.

For V8.5.0.0 through 8.5.5.9:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI60026

--OR--
· Apply Fix Pack 8.5.5.10 or later.

For V8.0.0.0 through 8.0.0.12:
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI60026

--OR--
· Apply Fix Pack 8.0.0.13 or later.

For V7.0.0.0 through 7.0.0.41:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI60026

--OR--
· Apply Fix Pack 7.0.0.43 or later.

Workarounds and Mitigations

Setting the webcontainer property HttpSessionIdReuse to false will mitigate this issue.

Get Notified about Future Security Bulletins

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

16 August 2016: original document published
13 September 2016: updated fix pack release dates

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Cross reference information
Segment Product Component Platform Version Edition
Application Servers WebSphere Application Server Hypervisor Edition
Application Servers WebSphere Application Server Liberty Core

Document information

More support for: WebSphere Application Server

Software version: 7.0, 8.0, 8.5, 8.5.5

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Software edition: Base, Developer, Express, Liberty, Network Deployment

Reference #: 1982588

Modified date: 14 December 2016


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