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Secunia Survey

Secunia would like to invite you to participate in an electronic survey
evolving the usefulness of our mailing lists. To value your effort
Secunia will offer you free access to the Secunia Security Manager for
three months as well as have a prize draw for an iPod nano.

We hope that you will give us a few minutes of your time, as your
response will help us provide you with better services in the future.
The questionnaire contains 19 questions and it takes approximately 5
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Security Policy and your answers will of course be kept strictly
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Best regards,
Niels Henrik Rasmussen
CEO Secunia

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TITLE:
WebCalendar User Account Enumeration Weakness

SECUNIA ADVISORY ID:
SA19974

VERIFY ADVISORY:
http://secunia.com/advisories/19974/

CRITICAL:
Not critical

IMPACT:
Exposure of system information

WHERE:
>From remote

SOFTWARE:
WebCalendar 1.x
http://secunia.com/product/5606/

DESCRIPTION:
David Maciejak has discovered a weakness in WebCalendar, which can be
exploited by malicious people to identify valid user accounts.

The problem is that different error messages are returned depending
on whether an unsuccessful login attempt is performed with a valid or
invalid username in the login page.

The weakness has been confirmed in version 1.0.3 and has also been
reported in versions 1.0.1 and 1.0.2. Other versions may also be
affected.

SOLUTION:
Edit the source code to ensure that a single general error message is
returned on a failed login.

PROVIDED AND/OR DISCOVERED BY:
David Maciejak

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About:
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