Symantec Enterprise Firewall Discloses Username Validity to Remote Users
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SecurityTracker Alert ID: 1018578
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SecurityTracker URL: http://securitytracker.com/id?1018578
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CVE Reference: CVE-2007-4422
(Links to External Site)
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Updated: Apr 24 2008
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Original Entry Date: Aug 16 2007
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Impact: Disclosure of system information
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Vendor Confirmed: Yes
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Advisory: Symantec Advisory
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Version(s): 6.x
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Description: A vulnerability was reported in Symantec Enterprise Firewall. A remote user can determine valid usernames.
When configured for remote access client-to-gateway VPNs using pre-shared key (PSK) authentication, the firewall responds differently
to login attempts with valid usernames than to attempts with invalid usernames. A remote user can exploit this to determine if
a specified username is valid or not.
Roy Hill of NTA Monitor Ltd reported this vulnerability.
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Impact: A remote user can determine valid usernames.
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Solution: The vendor has described a workaround in their advisory.
The Symantec advisory is available at:
http://securityresponse.symantec.com/avcenter/security/Content/2007.08.16.html
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Vendor URL: securityresponse.symantec.com/avcenter/security/Content/2007.08.16.html (Links to External Site)
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Cause: Access control error, State error
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Underlying OS: UNIX (Solaris - SunOS), Windows (NT), Windows (2000)
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Message History:
None.
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Source Message Contents
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Date: Thu, 16 Aug 2007 14:44:42 -0400
Subject: Symantec Enterprise Firewall Username Enumeration
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http://securityresponse.symantec.com/avcenter/security/Content/2007.08.16.html
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