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To: djane who wrote (16850)7/29/1998 5:38:00 PM
From: Moonray  Respond to of 22053
 
U.S. issues alert over e-mail flaw
San Jose Mercury News - Tuesday, July 28, 1998

Emergency bulletin calls problem extremely serious

The U.S. Energy Department's computer security team
confirmed Tuesday that a significant security flaw
exists in three of the most popular e-mail programs
around that, left unrepaired, could have catastrophic
consequences and urged users to repair or replace the
software.

Corporate technology managers spent Tuesday frantically
scrambling for more information about the flaw, which
was first reported in the Mercury News. And users found
it difficult to find the correct patches for the the
security hole.

Software companies initially provided little additional
technical information about the problem and no real fixes.
Microsoft Corp., for example, offered patches that were
determined to be ineffective and were subsequently
withdrawn.

The flaw, which allows an outsider to send a booby-trapped
e-mail message capable of executing commands on the user's
computer -- anything from sending out thousands of e-mails
in the user's name to erasing the hard drive -- exists in
some of the most popular software in the world: Microsoft's
Outlook Express and Outlook 98, and Netscape Communications
Corp.'s Messenger Mail, which accompanies versions 4.x of
the Communicator Web browser software. Other e-mail readers
may be affected, but most researchers now believe that
another commonly used program, Qualcomm Corp.'s Eudora, is
safe. The flaw can be exploited on the most common computer
operating systems.

The Computer Incident Advisory Capability, the Energy
Department's team, headquartered at the Lawrence Livermore
National Laboratory, declared in an emergency bulletin that
the situation is extremely serious: ''We base this assessment
on the ease with which the vulnerability can be exploited,
the widespread use of the vulnerable e-mail/news readers
and the potential for doing serious damage to a computer.''

Microsoft attempted to post patches for the hole in its
products Monday, but technical problems kept most users from
getting to them. Then the company discovered that the first
set of patches didn't work. Anybody who downloaded the first
set of patches is urged by the company to download them again,
probably later this week. Alternatively, users can download a
free copy of Eudora Light until a patched version of their
favorite e-mail program is available.

Some users believed the story was incorrect because it is so
similar to a well-known Internet hoax called the Good Times
virus. Typically, a user gets an e-mail warning them to
delete any e-mail with the subject ''Good Times'' because,
if opened, the Good Times e-mail will reformat the hard drive.
The warning message urges the recipient to ''send this to all
your friends,'' creating a flood of unnecessary e-mail and
chewing up system resources.

Normally, e-mail alone can't do any damage to a system. But
attackers can attach a file that's essentially a program to
an e-mail message. If a user runs that program, it could do
damage to the system, which is why system administrators warn
users to avoid opening attachments from strangers.

But this latest flaw can be triggered in some cases without
even opening the booby-trapped e-mail.

The problem can be exploited by assigning an exceptionally long
file name -- sometimes hundreds of characters -- to an
attachment. If the name is too long, it will overflow the e-mail
program's buffer. At that point, any software code contained in
that overflow can sometimes execute commands on the user's
computer.

The problem is related to MIME capabilities, or Multipurpose
Internet Mail Extensions, which let e-mailers work with items
besides text. MIME headers tell the e-mail software how to treat
the file. Older e-mail software that is not MIME-compliant is not
vulnerable to the hole.

While no one believes this flaw has been exploited outside the
laboratories where it's been researched for the past month,
experts are urging users and computer system administrators to
repair their systems as quickly as possible, on the assumption
that ''black hat'' hackers will soon be exploiting the problem.

''I'm just scared that somebody is going to spam the world with
this. Soon.'' said William J. Orvis, a security specialist with
CIAC.

Computer system administrators around the world are studying the
situation, trying to see what needs to be done.

''We don't normally comment on our internal systems, for security
reasons,'' said Lew Wagner, senior manager of the corporate
information security department at networking giant Cisco Systems
Inc. Wagner, however, said the standard e-mail package used inside
Cisco is not affected by the problem, adding there could be some
people within the organization who are using something else.

''We're trying to make sure our 14,000 employees are not using
any unauthorized applications,'' he said.

o~~~ O



To: djane who wrote (16850)7/29/1998 6:31:00 PM
From: djane  Respond to of 22053
 
V.90: As Fast as It's Going to Get

Modem vendors reject a proposed standard that
would have boosted the upload speed of V.90
modems.

by Brian McWilliams, PC World Daily News Radio
July 28, 1998, 3:46 p.m. PT

A proposal to boost the upload speeds of V.90
modems has died, apparently due to poor modem
sales and the indifference of manufacturers.

Current V.90 modems are limited to 33.6-kbps
upstream speeds. But Lucent has developed a way to enable nearly symmetrical
data rates, with upload speeds approaching 45 kbps.

More than a year ago, Lucent proposed that its
technology become part of the International
Telecommunications V.90 standard, which will be
ratified in September. But according to Les Brown, a
Motorola engineer and rapporteur for the ITU study
group on 56-kbps modems, Lucent's proposal never
made it into the spec, and the company hasn't pushed
to have it added to the second revision of the V.90
spec, to be released next year.

On Thursday this week, the ITU's 56K study group will
meet in Quebec City to finalize the V.90 spec before it
goes to the vote in September. Lucent spokesperson
Charlie Hartley said the company still thinks the
technology is promising, but Lucent won't bring a
formal proposal to the meeting.

Analysts say that since most modem users are Web
surfers, the industry doesn't see the 33-percent
upstream speed increase Lucent offers as worth the
trouble. Many modem companies are now turning their
attention to building DSL products rather than
enhancing their analog modems. Lucent says it has no
plans currently to develop the technology as a
proprietary standard.

Tune in to PC World News Radio to hear today's news
broadcast via RealAudio.

Copyright c 1998 PC World Communications. All Rights Reserved. Use of this
service is subject to
the PC World Online Terms of Service Agreement.

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