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AUSCERT External Security Bulletin Redistribution
Security Bulletin: Denial of service may affect IBM HTTP
1 September 2015
AusCERT Security Bulletin Summary
Product: IBM HTTP Server
Operating System: AIX
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2015-1283
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Security Bulletin: Denial of service may affect IBM HTTP Server
More support for:
IBM HTTP Server
6.1, 7.0, 8.0, 8.5, 8.5.5
AIX, HP-UX, Linux, Solaris, Windows
Denial of service may affect IBM HTTP Server. The IBM HTTP Server is used by
IBM WebSphere Application Server.
DESCRIPTION: Multiple integer overflows in the XML_GetBuffer function in Expat
through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other
products(Apache IHS), allow remote attackers to cause a denial of service
(heap-based buffer overflow) or possibly have unspecified other impact via
crafted XML data, a related issue to CVE-2015-2716.
CVSS Base Score: 6.8
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/104964 for the current
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/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.
The recommended solutions is to apply the interim fix, Fix Pack or PTF
containing APAR PI45596 for each named product as soon as practical.
For affected IBM HTTP Server for WebSphere Application Server:
For V220.127.116.11 through 18.104.22.168 Full Profile:
Upgrade to a minimum of Fix Pack 22.214.171.124 or later then apply Interim Fix
Apply Fix Pack 126.96.36.199 or later (targeted availability 11 September 2015).
For V8.0 through 188.8.131.52:
Upgrade to a minimum of Fix Pack 184.108.40.206 or later and then apply Interim Fix
Apply Fix Pack 220.127.116.11 or later (targeted availability 18 January 2016).
For V18.104.22.168 through 22.214.171.124:
Upgrade to a minimum of Fix Pack 126.96.36.199 or later and then apply Interim Fix
Apply Fix Pack 188.8.131.52 or later (targeted availability 02 November 2015).
For V184.108.40.206 through 220.127.116.11:
Upgrade to Fix Pack 18.104.22.168 and then apply cumulative Interim Fix PI45596
For unsupported versions IBM recommends upgrading to a fixed, supported
version of the product.
Workarounds and Mitigations
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Complete CVSS v2 Guide
On-line Calculator v2
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
31 August 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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