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Category:   Application (Security)  >   Symantec Anti Virus Vendors:   Symantec
Symantec Client Security Buffer Overflow in Realtime E-mail Scanning Lets Local Users Deny Service
SecurityTracker Alert ID:  1018371
SecurityTracker URL:
CVE Reference:   CVE-2007-3771   (Links to External Site)
Updated:  May 6 2008
Original Entry Date:  Jul 11 2007
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.x, 10.0
Description:   A vulnerability was reported in Symantec Anti Virus Corporate Edition. A local user can cause denial of service conditions.

A local user can send a specially crafted e-mail to trigger a buffer overflow in the Internet E-mail Auto-Protect feature and cause the Internet E-mail real-time protection service to crash. The system will not scan subsequent outbound SMTP email messages.

An outbound email with more than 951 characters in the To:, From: or Subject: fields can trigger the overflow.

Symantec credits Jordi Corrales with reporting this vulnerability.

Impact:   A local user can cause denial of service conditions.
Solution:   The vendor has issued fixed versions (, 10.1).

The Symantec advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:   Windows (Any)

Message History:   None.

 Source Message Contents

Date:  Wed, 11 Jul 2007 11:58:44 -0400
Subject:  Symantec Client Security Internet E-mail Auto-Protect Stack Overflow


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