Security Bulletin
Summary
Denial of service vulnerability in mod_dav module of Apache HTTP Server affects Cloud Pak System.
Vulnerability Details
CVEID: CVE-2006-20001
DESCRIPTION: Apache HTTP Server is vulnerable to a denial of service, caused by an out-of-bounds read or write of zero in mod_dav. By sending a specially crafted If: request header, an attacker could exploit this vulnerability to cause the process to crash.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/244883 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Cloud Pak System | 2.3.3.0 - 2.3.3.5 (Intel) |
| IBM Cloud Pak System Software Suite | 2.3.3.0 - 2.3.3.5 (Intel) |
| IBM Cloud Pak System | 2.3 |
Remediation/Fixes
Please refer to section below for mitigation.
Workarounds and Mitigations
if you are using mod_dav module, make sure to disable mod_dav and restart httpd.
In order to disable WebDav module , follow the action steps below
- Change Directory to httpd.conf, which located in the (Apache Home)/conf directory
- Edit the web_dav.so. module
- Comment out the following lines:
## LoadModule dav_module modules/mod_dav.so
##LoadModule dav_fs_module modules/mod_dav_fs.so
- Save Changes
- Restart Apache Service , run the commands
On Windows:
Apache2
On Linux:
/etc/init.d/httpd restart
Get Notified about Future Security Bulletins
References
Change History
01 Feb 2023: Initial Publication
*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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
31 March 2023
UID
ibm16967625