Vulnerability Note VU#757612

Apache Portable Runtime contains heap buffer overflow in apr_psprintf()

Original Release date: 24 Jun 2003 | Last revised: 18 Sep 2003


The Apache HTTP server contains a denial-of-service vulnerability that allows remote attackers to conduct denial-of-service attacks against an affected server.


The Apache HTTP server contains a heap buffer overflow vulnerability in the apr_psprintf() function. The Apache Software Foundation has provided the following description of this vulnerability:

    Apache 2.0 versions 2.0.37 through 2.0.45 can be caused to crash in certain circumstances. This can be triggered remotely through mod_dav and possibly other mechanisms. The crash was originally reported by David Endler <> and was researched and fixed by Joe Orton <>. Specific details and an analysis of the crash will be published Friday, May 30. No more specific information is disclosed at this time, but all Apache 2.0 users are encouraged to upgrade now.

For further information, please read the announcement located at


This vulnerability allows remote attackers to conduct denial-of-service attacks against an affected server.


The Apache Software Foundation recommends that users upgrade to version 2.0.46 to address this vulnerability. The latest version of Apache is available at:

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Apache Software FoundationAffected28 May 200302 Jun 2003
Apple Computer Inc.Affected12 Jun 200324 Jun 2003
ConectivaAffected16 Jun 200323 Jun 2003
Hewlett-Packard CompanyAffected16 Jul 200318 Sep 2003
MandrakeSoftAffected02 Jun 200324 Jun 2003
Red Hat Inc.Affected28 May 200302 Jun 2003
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



The CERT/CC thanks David Endler for discovering this vulnerability.

This document was written by Jeffrey P. Lanza.

Other Information

  • CVE IDs: CAN-2003-0245
  • Date Public: 28 May 2003
  • Date First Published: 24 Jun 2003
  • Date Last Updated: 18 Sep 2003
  • Severity Metric: 18.00
  • Document Revision: 15


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