IBM HTTP Server Vulnerabilities: Fixlist, August 2014

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IBM recently released a security bulletin with several high-priority fixes for its HTTP Server (APAR PI22070). Multiple vulnerabilities are documented with the following details and actionables:

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 http://xforce.iss.net/xforce/xfdb/94678 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Workaround or Mitigation: 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 http://xforce.iss.net/xforce/xfdb/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 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 http://xforce.iss.net/xforce/xfdb/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

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 solution 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 (targeted to be available 8 December 2014).

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 (targeted to be available 16 February 2015).

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 (targeted to be available 13 October 2014).

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.
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 website.
<i>(Photo courtesy of Flickr contributor OpenSource.com.)</i>