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[Full-Disclosure] Trivial Bug in Symantec Security Products

From: J. Oquendo (silinfiltrated.net)
Date: Wed Dec 29 2004 - 16:56:28 CST

Impact: Bug in Symantec products allows for free software updates

Norton AntiVirus for Windows 9x/NT/Me/2000/XP
Symantec Web Security
Symantec AntiVirus Scan Engine
Norton AntiVirus for Gateways
Symantec AntiVirus for Gateways
Norton AntiVirus Corporate Edition
Symantec AntiVirus Corporate Edition
Norton AntiVirus for Exchange

Symantec whose stock price of $27.38 at market close on December 15, 2004,
valuing the company at approximately $13.5 billion (according to their
home page) has a simple little glitch in the above mentioned products,
which would allow any user who has an expired product to automatically
continue updating without purchasing the software after the program has
expired. Vendor notified on 12/06/2004

Any user with an expired copy of the versions listed above can continue to
receive updates at no extra cost. While not a true to form "bug", the
silly workaround can hinder Symantec's future market valuations if users
simply allowed their products to expire, downloaded any "Intelligent
Updater" definitions via
http://securityresponse.symantec.com/avcenter/defs.download.html and
installed them with the clock turned back to a pre-expiration date.

Somehow, Symantec engineers have not implemented a mechanism to disallow a
user from installing the patches via changing the date on their computer
back to when the original program was installed and then running the
"Intelligent Updater." E.g.: User installs a 60 day trial version with
free updates that expires on Jan, 01, 2005. User goes to install an update
in July 2005 and gets a subscription error. User changes the date back to
some time before the product expired and installs the new definition
without problems. User changes date back forward without problems.

While not of the "Bugtraq" typical bug, Symantec engineers should try to
resolve this to avoid any future revenue loss.

Symantec could rewrite their updates to include a timer, or check via
atomic clock. Other options include informing their customers not to
commit the evil act of modifying the dates on their computers.

J. Oquendo
GPG Key ID 0x51F9D78D
Fingerprint 2A48 BA18 1851 4C99

CA22 0619 DB63 F2F7 51F9 D78D

sil politrix . org http://www.politrix.org
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