Vulnerability Note VU#857153

OPeNDAP code execution vulnerability

Overview

OPeNDAP server version 3 contains a vulnerability that allows an attacker to execute comands on the server.

I. Description

From the OPenNDAP website:

OPeNDAP provides software which makes local data accessible to remote locations regardless of local storage format. OPeNDAP also provides tools for transforming existing applications into OPeNDAP clients (i.e., enabling them to remotely access OPeNDAP served data).

A CGI script in OPeNDAP Version 3 (CGI_server) contains a vulnerability that allows an attacker to execute arbitrary commands on the server by supplying a malicious URL.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary commands.

III. Solution

Apply a patch

The OPeNDAP team has released a patch to address this issue. Users are encouraged to apply the patch as soon as possible.

Upgrade

Server version 4 (Hyrax) does not have this vulnerability.

Restrict access

Until updates can be applied, restricting access to vulnerable servers via password protectected directories or IP access control lists may mitigate this vulnerability.

Systems Affected

Vendor	Status	Date Notified	Date Updated
OPeNDAP, Inc.	Vulnerable	30-Apr-2007

References

http://www.opendap.org/
http://www.opendap.org/download/hyrax.html
http://www.opendap.org/server3-patch-04.27.2007.txt
http://www.cert.org/tech_tips/win-UNIX-system_compromise.html
http://secunia.com/advisories/25060/

Credit

Thanks to the OPeNDAP team for information used in this report.

This document was written by Ryan Giobbi.

Other Information

Date Public:	2007-05-14
Date First Published:	2007-04-30
Date Last Updated:	2007-05-18
CERT Advisory:
CVE-ID(s):
NVD-ID(s):
US-CERT Technical Alerts:
Metric:	2.16
Document Revision:	18

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Produced 2007 by US-CERT, a government organization
Disclaimers and copyright information

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