__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
___ __ __ _ ___
/ | /_\ /
\___ __|__ / \ \___
__________________________________________________________
INFORMATION BULLETIN
Deterministic Network Enhancer Vulnerability
[US-CERT Vulnerability Note VU#858993]
June 19, 2008 16:00 GMT Number S-322
______________________________________________________________________________
PROBLEM: The Deterministic Network driver contains a privilege
escalation vulnerability, which can allow a local attacker to
execute code with kernel privileges.
PLATFORM: Deterministic Network
DAMAGE: Execute code.
SOLUTION: Upgrade to the appropriate version.
______________________________________________________________________________
VULNERABILITY The risk is MEDIUM. A local attakcer may be able to execute
ASSESSMENT: code with windows kernel privileges.
______________________________________________________________________________
CVSS 2 BASE SCORE: 6.6
TEMPORAL SCORE: 5.5
VECTOR: (AV:L/AC:L/Au:N/C:C/I:C/A:N/E:F/RL:OF/RC:C)
______________________________________________________________________________
LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-322.shtml
ORIGINAL BULLETIN: http://www.kb.cert.org/vuls/id/858993
______________________________________________________________________________
[***** Start US-CERT Vulnerability Note VU#858993 *****]
Vulnerability Note VU#858993
Deterministic Network Enhancer privilege escalation vulnerability
Overview
The Deterministic Network driver contains a privilege escalation vulnerability,
which can allow a local attacker to execute code with kernel privileges.
I. Description
Deterministic Networks provides a product called Deterministic Network Enhancer
(DNE), which extends the Microsoft Windows networking stack. DNE is packaged with
multiple applications, including the Cisco VPN Client. The DNE driver, which is
provided by dne2000.sys, is vulnerable to privilege escalation. By making a
certain ioctl to the DNE device driver, it is possible to execute code with
windows kernel privileges.
II. Impact
A local attacker may be able to execute code with windows kernel privileges.
III. Solution
Apply an update
This issue is addressed in dne2000.sys version 3.21.12.17902. This driver is
available from the DNE support page.
Cisco Windows VPN Client users should install version 5.0.03.0530, as specified
in Cisco Support document CSCsm25860.
For other products that provide the DNE driver, please check with the vendor
for updates.
Systems Affected
Vendor Status Date Updated
Blue Coat Systems Vulnerable 19-Jun-2008
Cisco Systems, Inc. Vulnerable 18-Jun-2008
Deterministic Networks, Inc Vulnerable 18-Jun-2008
SafeNet Vulnerable 19-Jun-2008
References
http://www.digit-labs.org/files/exploits/dne2000-call.c
http://www.deterministicnetworks.com/support/dnesupport.asp
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBug
Details&bugId=CSCsm25860
http://secunia.com/advisories/30728/
http://secunia.com/advisories/30753/
http://secunia.com/advisories/30744/
http://secunia.com/advisories/30747/
Credit
This vulnerability was reported by mu-b at Digit-Labs.
This document was written by Will Dormann.
Other Information
Date Public 06/17/2008
Date First Published 06/18/2008 11:16:29 AM
Date Last Updated 06/19/2008
CERT Advisory
CVE Name
US-CERT Technical Alerts
Metric 22.50
Document Revision 6
[***** End US-CERT Vulnerability Note VU#858993 *****]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of US-CERT for the
information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.
CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
Voice: +1 925-422-8193 (7x24)
FAX: +1 925-423-8002
STU-III: +1 925-423-2604
E-mail: ciac@ciac.org
Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.
World Wide Web: http://www.ciac.org/
Anonymous FTP: ftp.ciac.org
PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins. If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.
This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
owned rights. Reference herein to any specific commercial products,
process, or service by trade name, trademark, manufacturer, or
otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.
LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC)
S-213: Nukedit 'email' Parameter Vulnerability
S-214: SurgeMail and WebMail 'Page' Command Vulnerability
S-215: Symantec Backup Exec Scheduler ActiveX Control Multiple Vulnerabilities
S-216: Juniper Networks Secure Access 2000 'rdremediate.cgi' Vulnerability
S-217: Drupal Multiple HTML Vulnerabilities
S-218: gd Security Update
S-219: Juniper Networks Secure Access 2000 Web Root Path Vulnerability
S-220: PHP-Nuke My_eGallery Module 'gid' Parameter Vulnerability
S-221: Learn2 STRunner ActiveX Control Vulnerabilities
S-222: Evolution Security Update