INFORMATION BULLETIN

S-320: Citect CitectSCADA Vulnerability

[US-CERT Vulnerability Note VU#476345]

June 19, 2008 16:00 GMT


PROBLEM:	Citect CitectSCADA contains a remotely accessible buffer overflow vulnerability which may allow a remote attacker to execute arbitrary code.
PLATFORM:	Citect CitectSCADA CitectFacilities
DAMAGE:	Execute arbitrary code or DoS.
SOLUTION:	Upgrade to the appropriate version.

VULNERABILITY ASSESSMENT:	The risk is MEDIUM. A remote, unauthenticated attacker may be able to execute arbitrary code or cause a denial of service.

CVSS 2 BASE SCORE: TEMPORAL SCORE: VECTOR:	6.4 5.3 (AV:N/AC:L/Au:N/C:P/I:P/A:N/E:F/RL:OF/RC:C)

LINKS:
CIAC BULLETIN:	http://www.ciac.org/ciac/bulletins/s-320.shtml
ORIGINAL BULLETIN:	http://www.kb.cert.org/vuls/id/476345
CVE:	CVE-2008-2639

[***** Start US-CERT Vulnerability Note VU#476345 *****]

Vulnerability Note VU#476345

Citect CitectSCADA buffer overflow

Overview

Citect CitectSCADA contains a remotely accessible buffer overflow vulnerability which may allow a remote attacker to execute arbitrary code.

Citect CitectSCADA is software used for monitoring and control in Supervisory Control And Data Acquisition (SCADA) systems. A buffer overflow vulnerability exists in a CitectSCADA process that listens on the network (20222/tcp) for service requests from clients. An attacker could exploit this vulnerability by sending specially crafted packets to a vulnerable CitectSCADA system.

Note that this vulnerability affects versions of Citect CitectSCADA and CitectFacilities.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary code or cause a denial of service.

III. Solution

Apply a patch

Supported Citect customers should contact Citect to receive a patch. For more information on contacting Citect visit http://www.citect.com/index.php?option=com_content&task=view&id=26&Itemid=29.

Restrict access

Restricting access to a vulnerable system by using host or network based firewalls may prevent a remote attacker from exploiting this vulnerability. For more information refer to Citect security article Securing Your SCADA Network.

Systems Affected

Vendor	Status	Date Updated
Citect	Vulnerable	11-Jun-2008

References

http://www.citect.com/index.php?option=com_content&task=view&id=186&Itemid=322
http://www.citect.com/index.php?option=com_content&task=view&id=26&Itemid=29
http://www.citect.com/documents/news_and_media/pr-citect-address-security.pdf
http://www.coresecurity.com/index.php5?module=ContentMod&action=item&id=2186
http://secunia.com/advisories/30638/
http://www.securityfocus.com/bid/29634/discuss

Credit

Thanks to Ivan Arce at Core Securities for information that was used in this report.

This document was written by Chris Taschner.

Other Information

Date Public	07/11/2008
Date First Published	06/11/2008 12:55:41 PM
Date Last Updated	06/17/2008
CERT Advisory
CVE Name	CVE-2008-2639
US-CERT Technical Alerts
Metric	3.57
Document Revision	14


[***** End US-CERT Vulnerability Note VU#476345 *****]

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