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Security Bulletin: Denial of service may affect IBM HTTP Server (CVE-2015-1788)

Security Bulletin


Denial of service in GSKit may affect IBM HTTP Server, if using SSL with IBM HTTP Server. The IBM HTTP Server is used by IBM WebSphere Application Server.

Vulnerability Details

CVEID: CVE-2015-1788

DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an error when processing an ECParameters structure over a specially crafted binary polynomial field. A remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base Score: 5
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM HTTP Server (powered by Apache) component in all editions of WebSphere Application Server and bundling products.

  • Version 8.5.5
  • Version 8.5
  • Version 8.0


The recommended solutions is to apply the interim fix, Fix Pack or PTF containing APAR PI44809 for each named product as soon as practical.

For affected IBM HTTP Server for WebSphere Application Server:
For V8.5.0.0 through Full Profile:

· Apply Interim Fix PI44809

· Apply Fix Pack or later.

For V8.0 through

· Apply Interim Fix PI44809

· Apply Fix Pack or later.

Workarounds and Mitigations


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Change History

10 September 2015: original document 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 Security Bulletin.


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.

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Document Information

Modified date:
15 June 2018