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NT Security Threatened Hackers keep heat on Microsoft's Windows NT security Land-Mine Battlefield Human-rights group targets land-mine IC suppliers Nasty Networking Led by Cascade, networking stocks return to real world EDA Firm's Plans German company pushes into formal-verification EDA Mini-Mergers Competition heats up the formal-verification race Logical Licensing Rambus raises license pace Cadence Across the Pond Cadence opens Europe design factory |
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Hackers keep heat on Microsoft's Windows NT security By Larry Lange, EE Times Boston -- A group of sophisticated hackers here has stepped up their assault on the security of Microsoft's Windows NT operating system. The group, called the L0pht (pronounced 'loft') posted on the Internet a hack--called LOphtcrack--they claim can be used to retrieve NT network-domain user names and passwords and display them in plaintext. "If you have an NT network, and you have that network connected to the Internet, you're in deep trouble," said "Mudge," L0phtcrack's co-author and an encryption expert. L0phtcrack follows in the wake of two separate NT hacks--PWDump and NTCrack--posted in the past two weeks by security experts in California. Microsoft officials contacted last week said they were not familiar enough with LOphtcrack to comment specifically about it. The LOphtcrack hack is a graphical user interface (GUI)-executable that adds a spreadsheet-like interface atop PWDump. "It [LOphtcrack] sets up columns of the user lists, what their passwords are--such as the MD4s and the LANMANs [passwords that are fairly easy to crack]--and when you click 'Run,' it just starts screaming down [decrypting] all the passwords. And then you can save that file out to a disk or print it," said Mudge. According to L0pht, L0phtcrack is the tip of an iceberg of software that's being generated by hackers poised to slam what the group calls Microsoft's complacency on the subject of NT security. The hackers who have taken on NT in recent weeks are members a worldwide network of code breakers who communicate over the Internet via electronic-security mailing lists, Usenet groups, FTPs and Web sites. In recent months, the community appears to have shifted its attention from Unix- and encryption-cracking techniques to take aim at Windows NT, which has begun to find favor among corporate users. "We're doing this because Microsoft is shoving stuff down people's throats, and you don't have the ability to look and see how good it is," said Mudge. "They're saying, 'Trust us; it's secure.' " For its part, Microsoft officials insist that if network administrators and users pay adequate attention to security issues, cracking encrypted passwords on any NT network remains inherently difficult. Microsoft also noted that most, if not all, operating systems have been subject to similar types of attack. While these hacks--L0phtcrack, included--require that the user have network-administrator privileges to access a password-encryption file, hackers note that common workarounds already exist if you know where to find them. Mudge said Microsoft has to change the way it undertakes product development. "They should post their specifications, so people can pick it apart before [the product] comes to market," he said. "Then when you do come to market, it'll be a great product, because 3,000 hackers and crypto experts will have ripped it apart and Microsoft will have had a chance to fix it all" before the final release. But Mike Nash, Microsoft director of marketing for Windows NT Server, countered that NT was more than adequately tested. "NT has one of the most extensive beta programs in the industry," he said. "Over 100,000 people beta tested 4.0, and I expect even more will beta test [the upcoming] 5.0." Even the U.S, Department of Defense subjected NT to rigorous testing, Nash said. Coming a mere two weeks after the breakthrough program that began the acceleration of NT hacking, L0phtcrack is a direct result of that first program, PWDump, written by Jeremy Allison, a programmer at Cygnus Solutions (Sunnyvale, Calif.). PWDump is the heart of the L0phtcrack GUI program and is included in L0phtcrack's "tool kit." Also included is an additional "dictionary attack" program that uses a "brute force" method. That program goes far beyond the capabilities of the previously reported NTCrack dictionary program. Password, please The L0phtcrack program does require a user to be an NT administrator and to have an administrator's password in order to access the file that contains the encrypted passwords. But hackers maintain that by using several common methodologies, a person could access those "admin" privileges directly over the Internet, and then gain access to the file (or registry) of passwords via the GUI and its extensions. According to Microsoft's Nash: "Unauthorized access to an administrator account can only happen in three major ways. One is that the administrator is a "bad guy"--a non-trusted person who has the administrator account and compromises the system with intent. Second, the administrator could inadvertently do something he didn't mean to do. And the third is where the administrator is in the account but is doing things beyond just administrating the system . . . [That is where] a Trojan horse gets involved in that system and compromises it." Nash added that NT is not alone: "All three of these cases are possible on any operating system." But far more serious problems may lie ahead for Microsoft, according to L0pht. The group has warned publicly that a second version of L0phtcrack, due to be available within a few weeks, promises even easier access to the NT-password file from remote locations, including over the Internet. Further, with the new version, a user would not need to be an administrator or have an administrator's password. "They [L0pht] make a claim here," said Nash, "but the claim that you can basically get [admin privileges] without knowing the admin password is a pretty significant claim that's unsubstantiated." "The next version [of L0phtcrack] is going to blow Microsoft out of the water," said Mudge. He said L0pht hopes to supply Microsoft with at least a week's "lead time" to react via a "fix" or a "patch." However, Mudge noted that only one day after the first L0phtcrack version was posted, he had received three messages from other hackers who were interested in getting the password registry without the admin. "It's going to happen," he added. "We've got our program working within a test environment; it's just a matter of fleshing it out." Philip Eskelin, a principal NT technologist for Fortune 100 companies at technology recruiting firm Pencom Inc. (New York), thinks the L0pht may be on to something. Eskelin has followed the advances of such hacker groups to uncover possible dangers to the NT networks he recommends for top corporate accounts. "Guys like those at the L0pht are feverish hackers who want to crack all these systems; that's where they get their high," said Eskelin. "And something like that is very good, because these guys get their high and make us all aware of all these issues. "With the L0pht's next version of this, [they claim] you won't have to be admin; but even now [with the GUI program], if you're on the NT network on the client side as a user, such as a consultant, there's an icon on your Windows desktop that dials in to the network. You establish the connection, and you simply put a floppy in to run the program and just have it happen. "You just have to be part of the NT domain to get these passwords. Remote access is obviously an easy way to become a part of the network, rather than having to physically go to the site and plug yourself into the network via a machine." Eskelin is less than impressed with Microsoft's reaction to the assault by hackers. "The immediate response that Microsoft gave was, 'Oh you need to be logged in as an administrator,' but that isn't the point," he said. "The point is that there are all kinds of alternative ways that you can actually [do] what needs to be done to get these passwords without having to be logged in as admin, such as the Trojan horse method or using Internet Explorer bugs." Eskelin criticized Microsoft for "blowing off the [the earlier reports] the way they did," since "this is a very serious problem for the company." He warned of the dangers of corporate espionage, noting: "It's not so much the hacker at home who will be using these kinds of programs for malicious intent; it's more of the corporations with multiple master domains across Europe and America, with thousands of machines, with all kinds of proprietary and confidential corporate data at stake. Look at what American Express has on its NT network--thousands and thousands of credit-card accounts. This could all be pretty nasty." Microsoft's Nash said that using any of these techniques would be difficult if the NT admin has taken the proper steps to protect against them. "First, using PWDump requires the administrator password. And second, even if you are an administrator, you have to attack this with a dictionary attack--an attack that is very, very easy to avoid by using 'strong' [hard to guess] passwords. We also have a utility for NT to force 'strong' passwords; it's used inside at Microsoft for our 22,000 employees." The L0pht's Mudge acknowledged that "the brute-force method in the program needs computing power" but, he added, "We ran it on a Pentium 133 [MHz], and it took three days, which is nothing. A [similar] Unix Crack program could take four or five days. If you're brute forcing, and if you have a list of users that you're trying to break that's 10 users long, it could take you three days with a 133, but if the list is 500 users long, it can take the same three days by adding more power. "People have the time; after all, the computer does all the work. On a Pentium Pro 200 [MHz], we can do it in under a day. If it's a multiple-processor box, we can do it under a half a day." The L0pht's Web-site NT advisory notes that "L0phtcrack will recover passwords from Windows NT registries by feeding in the output from PWDump and a dictionary file for both the LANMAN and MD4 plaintext passwords. L0phtcrack gives you the capability to brute force the entire keyspace and recover all user passwords up to 14 characters in length . . . by going through the entire keyspace available, this program will return all of the plain-text passwords up to and including 14 characters in length." The advisory does note that the User Login Dialog box on NT machines limits the amount of characters that can be typed to 14, though technically NT allows for up to 128 characters. Still, Mudge is confident that NT passwords can be cracked in most cases. "Microsoft's line has been that you need to use strong passwords--not use 'cat' or 'dog'--to prevent against dictionary attacks," he said. "But our response this time is that now you can't even choose passwords such as 's753@6yz'--up to and including 14 characters." Many hackers claim that PWDump is actually a useful utility tool for administrators who want to migrate users from Unix to NT systems, for example. But a big problem for NT is that users can access admin privileges fairly easily, right over the Internet, and then go back through an NT network and glean the password file list from the Security Accounts Manager (SAM). Take a sniff A program with the seemingly innocuous name "sniffer" is the most common methodology used by hackers for gaining access to admin privileges on Unix and, more recently, NT systems. Mudge explained that a sniffer is "like the old party-line telephone system, but unlike the nice neighbor who picks up the line, realizes that somebody is talking and puts it back down, [the sniffer] picks up the line and keeps listening." Sniffer programs are readily available commercially and are primarily used for network analysis. "Net Xray is one," said Mudge. "TCP Watch and LANWatch from FTP Software are others, and there are free ones for Windows, such as Gobbler. Anybody can grab [that one] off the Net." He explained that to glean an administrator's password, "you run the sniffer, and then you watch somebody logging in from one NT machine to another, or using a share, or using a printer or anything [else] over the network. Then you take the output from that and put it into our program. You then can say, 'Give me the LANMAN or MD4 passwords information,' and it will dictionary-attack against that." Mudge agreed that a common "Trojan horse" form of attack, as reported by EE Times Online, would work as well. "Most of the Trojans are done in the form of DLLs in Windows. It says 'Hey, I've got an administrator here; great. What do I want from him, what do I want him to execute for me?' The admin ends up running a program without even realizing it. The Trojan [can also be written to] say, 'Hey, I've got administrator here. Guess what I'm going to do: I'm going to dump the password file and then mail it to myself.'" Microsoft's Nash repeated that a Trojan horse is a problem for all operating systems and added that, "certainly, protecting against Trojan horses is an important part of the policy that administrators want to have for their systems." He noted that steps to protect against Trojan horses and other attacks are explained at the company's security Web site. But Pencom's Eskelin warned that there might not be an easy answer for Microsoft. "To fix or patch NT 4.0 would be problematic for Microsoft, due to the way the architecture is set up. It would definitely be a big hit to them to actually have to go in and redo it. Even if Microsoft went in and put in some kind of weird hack, PWDump would still work. If you are logged in as admin and their hack said, 'You can't look at the password information in the registry'--well, [NT] can't do that, because being able to look at the security information is part of being an administrator." Mudge and Eskelin also agree that the coming release of NT 5.0 may not prove to be the perfect solution that Microsoft hopes for. "With all the upgrades comes more functionality," said Eskelin, "but also more shortcomings and bugs for hackers to get at. Whether it is NT 5.0 or NT 20.0, it's still going to be the same juggling contest. It's not going away." And patches, he said, are not the answer for the long haul. "It would be like patching holes in a dam--like the guy who puts his finger in one hole, but then another one pops open." Eskelin believes Microsoft should begin a process of collaboration with the hackers. "It is important for Microsoft to start working with the hackers rather than against them, since those are really the people who are testing [NT] to make sure that it's a secure operating system." But Nash said that the ongoing dialogue on Microsoft's security Web site has been quite helpful for the company's NT customers."Security is a technical issue, but it's also a policy issue," he said. "Therefore, it's Microsoft's job to make sure that everyone's aware of the steps necessary to ensure a secure site." Provided certain steps are taken by the network administrators, he said, NT is as secure as any operating system available. What are those steps? Said Nash: "Secure your administrator password, make sure you don't use your administrator account for anything other than administrative work, and make sure that a policy of strong passwords is implemented in your corporate site." Eskelin acknowledged that Microsoft is correct in observing that NT is far from the only hacking target. "I wouldn't say just blow off NT because of these type of things; there are lots of different holes in Unix too." The lesson to be learned from the recent rash of hacks, he said, is that all "companies need to be aware of ways to mold their security policies in order to protect themselves." (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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Human-rights group targets land-mine IC suppliers By George Leopold, EE Times Washington -- They have names like Adam, Claymore, Gator and Volcano. In a flash, they can indiscriminately maim or kill a soldier or a child. Land mines make no distinction between victims. That's why the private watchdog group Human Rights Watch is launching what it calls a "stigmatization campaign" designed to shame component suppliers, including many familiar names in the U.S. electronics industry, into renouncing production of land mine components. So far, 17 companies led by Motorola Inc. have agreed to stop supplying antipersonnel mine components to manufacturers. The campaign is part of an international drive to ban production, stockpiling, export and use of antipersonnel mines that have sown misery around the world for decades. In a report released on April 18, Human Rights Watch identified 47 U.S. companies involved in the production of land mine components such as switches, resistors and diodes. Despite the industry's exodus from the mine component business, 30 companies, including such familiar names as General Electric Co., defense electronics giant Lockheed Martin Corp. and chief competitor Raytheon Co., either refused in writing to end their involvement in production or did not respond to letters from Human Rights Watch urging them to do so. "The decision by 17 big and small companies to renounce future involvement in mine production is a landmark event in the movement to achieve a total antipersonnel mine ban in the U.S.," Human Rights Watch declared in its report, "Exposing the Source: U.S. Companies and the Production of Antipersonnel Mines." The report credits Motorola (Schaumburg, Ill.) as the first U.S. company to publicly end its role in land mine manufacturing. Still, the report continued, "Many companies argued that they were unable to control the ultimate destination or use of their products. However, making a commitment to not knowingly sell components for end use in antipersonnel mines is a vital step forward." (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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Led by Cascade, networking stocks return to real world By W. David Gardner, EE Times Westford, Mass. -- If the networking acquisition game had a day of reckoning it was on Friday, Jan. 24. That was the day the stock of Cascade Communications Corp. was pounded for a 36 percent loss, cutting a breathtaking $2.3 billion off the high-flying stock's market value in a single day. Cascade's Black Friday was also a demonstration of the perverse impact that Wall Street can sometimes inflict on its favorite stocks: the company had just reported better-than-expected sales and earnings, so the logical move for Cascade's stock would be up. But apparently the figures weren't good enough and Cascade's stock was battered by waves of selling. When the dust settled, Cascade's shares had dropped from the mid-$60s to $41 a share. Investors who bought Cascade stock in the mid-$90s in the previous year were particularly shell-shocked. Even so, Cascade stockholders had plenty of company as other networking stocks--the darlings of Wall Street until the January debacle--were similarly being punished. One result of the stock rout is that the lowered stock prices are likely to put a crimp in networking companies' ability to make acquisitions of smaller rivals, which for many networking outfits is their lifeblood. Today, many insiders--officers, directors and other early investors in networking stocks--can thank their lucky stars that they had the foresight and luck to sell high before the slide. But with so many top networking designers and executives cashing in their companies' stocks and many likely to leave their corporate nests, a burning issue is how the networking companies will fare without many of the best engineers who pioneered the recent networking boom with their state-of-the-art products. For instance, at Cascade, innovative designer Wu Fu Chen has left. Chen, a former vice president of engineering at AT&T Paradyne Corp., was a founder of Cascade, responsible for many of the products that rocketed it to the forefront of frame-relay-based WAN networking. Then, Chen cashed in again when he left Cascade for a few months and founded Arris Networks Inc., which was acquired by Cascade last year. Once again, Chen's products are selling like proverbial hotcakes as Cascade sells the Arris offerings to eager customers. But Chen--a double-dipping multimillionaire many times over--is gone from Cascade. Chen has cashed in most of his stock at lofty prices. So have other Cascade insiders. For instance, chairman Victoria Brown and chief executive Daniel Smith had sold most of their stock in August 1996 when it the stock was at nosebleed-inducing heights. The story of fortunate insiders selling out of networking company stocks has been repeated at other networking companies. At 3Com Inc. many insiders sold out most of their stock in January just before 3Com tanked. However, chief executive Eric Benhamou retained more than 400,000 shares after selling 60,000 shares at more than $70--an indication that he'll stick around for awhile. Another fortunate seller before the crash was Ascend's president, Mory Ejabat, who vacated most of his position in February. Also in February, Cisco's president John Chambers, who joined the networking giant in 1994, sold most of his options for more than $32 million. Why were networking stocks so volatile? The best explanation seems to be that they were once the beneficiaries of "momentum investing." Momentum stocks possess a sort of investment helium; that is, they will continue going up fast simply because they have gone up fast in the past. For the networking stocks, the law of gravity was in abeyance for several months until another Wall Street principle came into play: the principle of the pendulum in which what goes up in an irrational manner can go down in an irrational manner. (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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EDA Firm's Formal
Plans By Richard Goering, EE Times Fremont, Calif. -- The red-hot formal verification market gains another entry this week as Verysys Electronic Design Automation, a new German company with marketing headquarters in Silicon Valley, announces its product plans. But Verysys' ultimate plans go well beyond formal verification, and point to a new business approach that its founders refer to as a "virtual company." Verysys promises a formal model checker and two equivalency checkers based on core technology from Siemens AG, all to be introduced in June at the Design Automation Conference. But the company's larger mission is to market "feed-forward," next-generation EDA products from universities, research institutes and private companies worldwide. In formal verification, Verysys faces competition from vendors including Chrysalis, Lucent and Abstract Hardware Ltd. (AHL), all of which have introduced model checkers within the past few months. Verysys may have a challenge differentiating its products from those of AHL, which uses the same Siemens core technology and was originally intended to be part of Verysys, according to Gerry Musgrave, AHL managing director. Musgrave said AHL decided to go its own way in the U.S. market because it was more confident of its own ability to attract financing. While AHL recently closed a $3 million round of funding, Verysys has been initially funded with over $2 million provided by private investors and the German government. But Verysys is confident of success even as a competitor to AHL. "We want to become one of the trend setters working on a next-generation design flow," said Hans-Detlef Boesch, president. "We'll start with products in the formal verification area, make them successful, and then move on to the next step." Future products, he said, could include high-level estimation, hardware/software codesign, or a systems specification language. All will be based on the "feed-forward" concept, which has to do with automatically feeding constraints and other design data forward rather than depending on iterations. --Additional reporting by Peter Clarke (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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Competition heats up the formal-verification race By Richard Goering, EE Times Fremont, Calif. -- Two of the best-known providers of Windows-based tools took on new identities last week through small but highly strategic acquisitions. OrCAD purchased the EDA Bridge component-management technology from Team Corp. (Oakville, Canada, while its rival, PADS Software (Marlboro, Mass.). agreed to acquire signal-integrity analysis provider HyperLynx Inc. (Redmond, Wash). While Team Corp. and HyperLynx offer very different products, both have pioneered Windows-based software in areas so far dominated by expensive Unix-based tools. Team Corp. last year left its value-added-reseller business to focus on component information management systems, while HyperLynx has become the best-known provider of low-cost signal integrity analysis tools. For EDA industry volume leader OrCAD, the acquisition marks a significant turning point, said Mike Bosworth, president and CEO. "We feel we have achieved what we set out to do, which was world leadership in desktop EDA," he said. "With that our target is shifting to the Windows NT enterprise market, which we see as a $3-billion total market potential." PADS Software, meanwhile, saw high-speed analysis tools as a requirement for competition in the board design market, said Richard Finigan, president. "It's strategic in that it removes our dependency on PCB [CAD] alone," he added. Dataquest has forecast 13.7 percent compound growth for signal-integrity analysis over the next five years, compared to 9.3 percent for pc-board layout. Each of the acquisitions is small, involving 11 perons in the case of Team Corp., and seven with HyperLynx. Financial terms were not revealed for either purchase. The Team Corp. purchase is OrCAD's first as a public company, while PADS remains private. (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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Rambus raises license pace By David Lammers, EE Times Tokyo -- Even though both companies have been vocal proponents of other next-generation DRAM technologies, Mitsubishi Electric Corp. and Micron Technology Inc. (Boise, Ida.) have licensed the Rambus interface technology needed to make the 1.6-Gbit/second Direct Rambus DRAMs, Nine DRAM makers have signed up, and the major holdouts--Fujitsu, IBM Microelectronics, Siemens, and Texas Instruments--are believed to be negotiating with Rambus (Mountain View, Calif.) IBM has a license for the logic interface but has yet to take a license for the memory interface technology. Ever since Intel Corp. announced on Dec. 16 that its memory road map would shift to next-generation Direct RDRAMs beginning in 1999, licensing activity by the DRAM makers has quickened. However, "there is still a lot of confusion out in the marketplace," said Subodh Toprani, Rambus marketing vice president, despite the fact that Intel executives reiterated last week that Intel has no intention of supporting competing high-bandwidth memory solutions. Intel's road map calls for a progression from 66-MHz SDRAMs to 100-MHz synchronous DRAMs beginning next year, and the Direct RDRAMs beginning early in 1999. While the major DRAM manufacturers are stepping up their Rambus development programs, most of them also are developing either synchronous DRAMs, which read data off both the rising and falling edges of the clock, called Double Data Rate (DDR) SDRAMs, or the Synclink DRAM now being designed under a contract to the Canadian design company Mosaid Corp. For example, Samsung Electronics Corp. (Seoul) has an active RDRAM development program under way, but Samsung managers also have gone out on the road in support of the alliance of companies backing the DDR SDRAM specification. Intel's Dennis Lenehan, in charge of Intel's relations with the DRAM industry, last week said Intel will not support the DDR specification because it "breaks compatibility" with the SDRAM memory architecture and would require a major redesign of the memory-to-microprocessor bus. Pete MacWilliams, an Intel fellow working on bus architectures at Intel's Oregon facility, said at the International Solid State Circuits Conference in February that Intel would not support the Synclink DRAM either. Toprani said that while it is true that most DRAM makers have designers working on other types of DRAMs, the largest DRAM makers have responded to Intel's memory road map by putting a priority on getting their Direct Rambus designs done. (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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Cadence opens Europe design factory By Peter Clarke, EE Times Manchester, England -- Cadence Design Systems Inc. is expanding its so-called design factory approach as it adds design services to its EDA-tools business. Specifically, Cadence is taking over the employment of a team of IC designers from ICL plc, a subsidiary of Fujitsu Ltd., based here, as part of a chip-design outsourcing contract. The move is a European mirror of a $70 million outsourcing deal forged by Cadence and Unisys in 1995, under which a Rancho Bernardo, Calif., site became Cadence's first design center. While the Unisys deal included the transfer of 150 engineers, Cadence is taking on only 26 in Manchester but intends to expand the team through recruitment. The value of the ICL deal was not disclosed. (c) 1997 CMP Media, Inc [This article comes from EE Times in a joint cooperative effort with the Motley Fool. For more articles like it, please look at Fool's Gold every weekend or simply go to the Fool's Gold Mine and page through our back issues, which all have clever and cool EE Times articles in them.] |
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