[NT] Pc-to-Phone Sensitive Information Disclosure
From: support@securiteam.comDate: 10/29/01
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From: support@securiteam.com To: list@securiteam.com Subject: [NT] Pc-to-Phone Sensitive Information Disclosure Message-Id: <20011029065442.D13AF138BF@mail.der-keiler.de> Date: Mon, 29 Oct 2001 07:54:42 +0100 (CET)
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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Pc-to-Phone Sensitive Information Disclosure
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SUMMARY
<http://www.iconnecthere.com/nonmembers/eng/pc_to_phone_product.html>
PC-to-Phone is a popular service that allows PC users to call other PCs or
Phones and make conversations with them. A security vulnerability in the
product allows local users to see other users' account details (including
account passwords usable for billing purposes) and log of phone calls.
DETAILS
Vulnerable systems:
Pc-to-Phone version 3.0.3
Both the account number and password are stored in a file "temp.html" in
the PC-to-Phone install directory, which is world readable. Any user on a
multi-user system can look up the account number and password of any
currently logged in user (or the last user in case of a program/system
crash).
The same goes for the log and PhoneBook folders, which are shared among
all users on a system.
Vendor response:
--- cut here ---
Dear Mr. Hagen,
I am the Product Manager for PC2Phone, and I wanted you to know that I
received your e-mail and that I sincerely thank you for drawing this issue
to our attention.
Deltathree has rallied around solving this issue, and is committed to
providing a comprehensive and expedient solution. To update you on our
progress, it appears that this bug cannot be addressed by a quick hot fix;
we will need to do some significant development work. We have adjusted our
development priorities accordingly and are committed to releasing a new
version of PC2Phone in the upcoming quarter.
Based on your e-mail, we will have decided to (just this afternoon)
provide different dialers for multi-user and single-user/secure systems.
In the latter, the user will be able to store neither the account nor the
password, thus mitigating the potential security issue you identified. In
the multi-user system, we will ensure that all data is properly secured.
On behalf of all of Deltathree and iConnectHere's customers, I thank you
for bringing this to our attention. Based on user feedback, we are able to
offer ever-improving products and services, and we sincerely appreciate
this opportunity to serve you better.
Sincerely,
Jennifer Alexander
Product Manager, Access Devices
jennifera@deltathree.com
--- cut here ---
ADDITIONAL INFORMATION
The information has been provided by <mailto:art@broomstick.com> Arthur
Hagen.
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