October 23, 2006
Symantec Device Driver Elevation of Privilege

Revision History
November 9, 2006: Minor update to clarify the affected versions of SAV 8.1

Risk Impact

Authentication RequiredYes
Exploit publicly availableNo

Symantec was notified of a vulnerability in a device driver which, if successfully exploited, could allow a local attacker to execute arbitrary code with elevated privileges or to crash the system.

Affected Products
Symantec AntiVirus Corporate Edition8.1 all versions earlier than the solution8.1.1 MR9
Symantec AntiVirus Corporate Edition9.0.3 and earlier 9.0.4 MR4 build 1000 or later
Symantec Client Security1.11.1.1 MR9 Build 393
Symantec Client Security2.0.3 and earlier2.0.4 MR4 build 1000

Note: Symantec AntiVirus Corporate Edition 8.1.1 MR9 is available in English and Japanese only. Symantec recommends that SAV Corporate 8.1.1 customers update to the English version of SAV CE 8.1.1, or migrate to a non-vulnerable version of SAV Corporate Edition 9 or 10.

Symantec Platinum Support customers can also download updates from the Platinum Web site.

Unaffected Products
Symantec AntiVirus Corporate Edition10.xall
Symantec AntiVirus Corporate Edition9.0.4 and laterall
Symantec Client Security3.xall
Norton AntiVirus 2005 and laterall
Norton Internet Security2005 and laterall
Norton System Works2005 and laterall

Boon Seng Lim notified Symantec of a vulnerability in SAVRT.SYS which could allow a malicious user to use the output buffer of DeviceIOControl() to overwrite kernel addresses because the address space of the output buffer was not properly validated. A successful exploit could potentially allow a local attacker to execute code of their choice with elevated privileges, or to crash the system.

Symantec Response
Symantec engineers verified that this issue exists in the products listed in the table above, and have released updates to address currently supported affected products.

Symantec is not aware of any customers impacted by this issue, or of any attempts to exploit the issue.

As a part of normal best practices, Symantec recommends that users keep all application software and operating systems up-to-date with the latest vendor supplied patches.

Symantec would like to thank Boon Seng Lim for reporting this issue, and working with us on the resolution.

This issue is a candidate for inclusion in the Common Vulnerabilities and Exposures (CVE) list (, which standardizes names for security problems. The CVE initiative has assigned CVE-2006-3455 to this issue

Initial Post on: Monday, 23-Oct-06 10:30:00
Last modified on: