Security Bulletin: Potential Denial of Service in IBM HTTP Server CVE-2014-0098

Summary

Potential Denial of Service in IBM HTTP Server for IBM WebSphere Application Server.

Vulnerability Details

CVEID: CVE-2014-0098
Description: IBM HTTP Server may be vulnerable to a denial of service, caused by certain cookies being logged in the access log. A remote attacker could exploit this vulnerability to cause the server process to hang or crash. This only affects users that have modified their configuration to add cookie logging.
CVSS Base Score: 5.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/91879 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 problem affects the IBM HTTP Server component in all editions of WebSphere Application Server and all products that bundle WebSphere Application Server:
· Version 8.5.5
· Version 8.5
· Version 8
· Version 7
· Version 6.1

Remediation/Fixes

The recommended solution is to apply the Fix Pack for each named product as soon as practical.

**Fix:Apply a Fix Pack containing this APAR PI13028, as noted below:

For affected IBM HTTP Server for WebSphere Application Server:**

For V8.5.0.0 through 8.5.5.1 Full Profile:

• Upgrade to a miniumum Fix Pack Level 8.5.0.2

• Apply Interim Fix PI13028
  --OR–

• Apply Fix Pack 8.5.5.3 or later.
  **
  For V8.0 through 8.0.0.8:**

• Upgrade to a minimum Fix Pack Level 8.0.0.6

• Apply Interim Fix PI13028
  --OR–

• Apply Fix Pack 8.0.0.9 or later.

For V7.0.0.0 through 7.0.0.31:

• Upgrade to a minimum Fix Pack Level 7.0.0.29

• Apply Interim Fix PI13028
  --OR–

• Apply Fix Pack 7.0.0.33 or later.
  **
  For V6.1.0.0 through 6.1.0.47:**

• Ensure you are at Fix Pack 6.1.0.47 then apply Interim Fix PI13028

Workarounds and Mitigations

Do not log individual cookies. You may log the whole cookie header without being vulnerable.