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AUSCERT Security Bulletin
ASB-2010.0081
IBM HTTP Server mod_isapi vulnerability
17 March 2010
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AusCERT Security Bulletin Summary
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Product: IBM HTTP Server
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2010-0425
Member content until: Friday, April 16 2010
Reference: ASB-2010.0073
Comment: Administrators can check if their system is vulnerable by examining
the httpd.conf file and determining whether mod_isapi has been
enabled.
OVERVIEW
IBM have released a fix to the mod_isapi module for IBM HTTP Server
correcting a security vulnerability.
IMPACT
The vendor has provided the following information regarding this
vulnerability:
"Repeated malicious requests to URLs configured to be handled by
mod_isapi can cause errors, crashes, or remote execution." [1]
This affects Windows users of version 6.0 or 6.1 of IBM HTTP
Server who have enabled the use of mod_isapi (not in use by
default). [1]
MITIGATION
Users can disable the affected module or apply the fix provided
by IBM. [1]
REFERENCES
[1] PM09447: CVE-2010-0425 MOD_ISAPI VULNERABILITY
http://www-01.ibm.com/support/docview.wss?uid=swg1PM09447
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
http://www.auscert.org.au/render.html?it=3192
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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