Security Bulletin: Potential Security Exposure in IBM HTTP Server CVE-2013-0169 PM85211

Flash (Alert)


Potential Security Exposure with IBM HTTP Server for WebSphere Application Server



CVE ID: CVE-2013-0169 (PM85211)

The TLS protocol in the GSKIT component of the IBM HTTP Server does not properly consider timing side-channel attacks, which could allow a remote attacker to conduct distinguishing attacks and plain-text recovery attacks via statistical analysis of timing data for crafted packets, aka the "Lucky Thirteen" issue.


CVSS Base Score: 4.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS String: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

This problem affects the IBM HTTP Server component in all editions of WebSphere Application Server and bundling products:
· Version 8.5
· Version 8
· Version 7
· Version 6.1

REMEDIATION: The recommended solution is to apply the Fix Pack or PTF for each named product as soon as practical

Fix: Apply a Fix Pack or PTF containing this APAR PM85211, as noted below:

For affected versions of IBM HTTP Server for WebSphere Application Server:

For V8.5.0.0 through Full Profile:

  • Apply Fix Pack or later.

For V8.0.0.0 through --OR--
  • Apply Fix Pack or later.
For V7.0.0.0 through --OR--
  • Apply Fix Pack or later.

For V6.1.0.0 through --OR--
  • Apply Fix Pack or later.

· Workaround(s): None

· Mitigation(s): None

Important note: IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

For additional details and information on WebSphere Application Server product updates:
· Complete CVSS Guide
· On-line Calculator V2
· CVE-2013-0169

· 30 May 2013: Original copy published

*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 Flash.

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 IBM HTTP Server Base Server AIX, HP-UX, Linux, Solaris, Windows, z/OS 8.5, 8.0, 7.0, 6.1 All Editions

Document information

More support for:

WebSphere Application Server

Software version:

6.1, 7.0, 8.0, 8.5

Operating system(s):

AIX, HP-UX, Linux, Solaris, Windows, z/OS

Software edition:

Base, Developer, Express, Network Deployment

Reference #:


Modified date:


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