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Security Bulletin: Multiple vulnerabilities fixed in IBM HTTP Server (APAR PI22070)

Security Bulletin


Summary

IBM HTTP Server is affected by multiple vulnerabilities.

Vulnerability Details

CVE ID: CVE-2014-0226
Description: The IBM HTTP server is vulnerable to a heap-based buffer overflow, caused by a race condition in the mod_status module when handling the scoreboard. By sending a specially-crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/94678 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Work around or Mitigations: This can be mitigated by limiting mod_status access to trusted IPs.

CVE ID: CVE-2014-0231
Description: The IBM HTTP Server is vulnerable to a denial of service, caused by an error in the mod_cgid module. By sending specially-crafted requests, an attacker could exploit this vulnerability to cause child process to hang.
CVSS Base Score: 5.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/94674 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Work around or Mitigation: This does not affect Windows platform or if you do not have CGI enabled.

CVE ID: CVE-2014-0118
Description: The IBM HTTP Server is vulnerable to a denial of service, caused by an error in the mod_deflate module. By sending specially-crafted requests, an attacker could exploit this vulnerability to exhaust all available CPU and memory resources.
CVSS Base Score: 5.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/94675 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Work around or Mitigation: This can be mitigated by not loading the optional mod_deflate module or by disabling the DEFLATE input filter.

CVE ID: CVE-2013-5704
Description: The IBM HTTP Server is vulnerable to HTTP trailers being used to replace HTTP headers late during request processing, potentially confusing modules that examined or modified request headers earlier.
CVSS Base Score: 5.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/92235 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Workaround or Mitigation: none

The following CVE's do not affect any IBM HTTP Server release
CVE ID: CVE-2014-0117
CVE ID: CVE-2014-3523
CVE ID: CVE-2013-4352

Affected Products and Versions

This problem affects the IBM HTTP Server component in all editions of WebSphere Application Server and bundling products:
· Version 8.5.5
· Version 8.5
· Version 8.0
· Version 7.0
· Version 6.1
· Version 6.0

Remediation/Fixes

The recommended solutions is to apply the interim fix, Fix Pack or PTF containing APAR PI22070 for each named product as soon as practical

For affected IBM HTTP Server for WebSphere Application Server:

For V8.5.0.0 through 8.5.5.2 Full Profile:

· Upgrade to Fix Pack 8.5.5.2 and then apply Interim Fix PI22070

--OR--
· Apply Fix Pack 8.5.5.4 or later.


For V8.0 through 8.0.0.9:

· Upgrade to Fix Pack 8.0.0.9 and then apply Interim Fix PI22070

--OR--
· Apply Fix Pack 8.0.0.10 or later.


For V7.0.0.0 through 7.0.0.33:

· Upgrade to Fix Pack 7.0.0.33 and then apply Interim Fix PI22070

--OR--
· Apply Fix Pack 7.0.0.35 or later.

For V6.1.0.0. through 6.1.0.47:
· Upgrade to Fix Pack 6.1.0.47 and then apply Interim Fix PI22070

For V6.0.2.0 through 6.0.2.43:
· Upgrade to Fix Pack 6.0.2.43 and then apply Interim Fix PI22070 from IBM Support.

Get Notified about Future Security Bulletins

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.

References

Complete CVSS v2 Guide
On-line Calculator v2

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

21 August 2014: 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.

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.

Document information

More support for: WebSphere Application Server
IBM HTTP Server

Software version: 6.0.2, 6.1, 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, Enterprise, Network Deployment

Reference #: 1672428

Modified date: 13 October 2014


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