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TITLE:
Symantec Enterprise Firewall User Enumeration Weakness

SECUNIA ADVISORY ID:
SA26511

VERIFY ADVISORY:
http://secunia.com/advisories/26511/

CRITICAL:
Not critical

IMPACT:
Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
Symantec Enterprise Firewall 6.x
http://secunia.com/product/15339/

DESCRIPTION:
A weakness has been reported in Symantec Enterprise Firewall, which
can be exploited by malicious people to determine valid usernames.

The problem is that a different response is sent when using a valid
or invalid username and can be exploited to determine valid
usernames.

Successful exploitation requires that the application is configured
for remote access (client-to-gateway) VPN using pre-shared key (PSK)
authentication.

The weakness is reported in version 6.x.

SOLUTION:
The vendor recommends adding the "default-ikeuser" username. Please
see the vendor's advisory for details.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Roy Hill, NTA Monitor Ltd.

ORIGINAL ADVISORY:
http://securityresponse.symantec.com/avcenter/security/Content/2007.08.16.html

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About:
This Advisory was delivered by Secunia as a free service to help
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Please Note:
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