Security News > 2004 > May > Theft of Cisco Source Code Stirs Fears of Security Threat

http://www.computerworld.com/securitytopics/security/story/0,10801,93352,00.html News Story by Jaikumar Vijayan MAY 24, 2004 COMPUTERWORLD The theft of proprietary operating system source code from Cisco Systems Inc. poses a potentially serious security threat to corporate networks that use the company's technology, users and analysts said. And the paucity of information released by the networking giant in the wake of last week's disclosure that the code had been stolen is raising troubling questions about what exactly happened and the real extent of the compromise, they added. "We are all waiting to hear what Cisco has to say," said Stephen Smith, network manager at Keystone Mercy Health Plan in Philadelphia. Cisco has been "unnaturally and unproductively quiet," added John Pescatore, an analyst at Gartner Inc. "That gives the impression that they are still unsure about the scope of the breach. Or they are sure, and it's much worse than has come out so far," he said. Unidentified attackers last week stole an unspecified amount of source code for Cisco's Internetworking Operating System 12.3 and 12.3T software, which is widely used in switches and other networking equipment. A Russian Web site posted about 13MB of what it claimed was the stolen code on May 15, saying that as much as 800MB of code appeared to have been stolen. Alexander Antipov, a security expert at Moscow-based Positive Technologies, which owns the Web site that posted the code, claimed that the company downloaded it via a link provided over an Internet Relay Chat channel by someone using the online name Franz. The supposed Cisco code samples, a copy of which was sent to Computerworld, were removed from Positive Technologies' site at Cisco's request on May 18, Antipov said. In a prepared statement posted on its Web site last week, Cisco confirmed that a "portion" of IOS code had been illegally copied and publicly posted for several days. It appeared that the occurrence was not the result of flaw in any Cisco product or service, the note said. It is also unlikely that the action was taken by a Cisco employee or contractor, it added. The company refused to provide any further details, citing an ongoing investigation into the matter, but said it believed that "the improper publication of this information does not create increased risk to customers' Cisco equipment." "We will continue to closely monitor this matter and provide updates as appropriate to customers," a company spokesman said. The theft raises security concerns, especially since Cisco's technology is widely used on corporate networks, users said. "Now that the code is available to scrutinize, it will be easier to find holes to exploit," said Jon Duren, chief technology officer at IdleAire Technologies Corp., a Knoxville, Tenn.-based provider of electrification services. "This issue has caused [us] to re-evaluate our access control lists on the routers, and on devices surrounding our routers, to ensure that they are solid," Duren said. A similar incident involving the theft of Microsoft Corp. source code for Windows NT and Windows 2000 in February led to the discovery of a remotely executable flaw in the company's Internet Explorer browser software [QuickLink 44787]. The stolen Cisco code could be investigated for similar flaws or somehow exploited to create back doors or to fool users into downloading malicious patches or Trojan horse programs, security experts said. In the Microsoft incident, the stolen code was freely available for download. In contrast, the Cisco source code hasn't resurfaced following its brief public airing on the Russian Web site. Another difference between the two incidents is that the Cisco source code could be a lot more difficult to exploit than the Microsoft code, which was "complete and reasonably easy to work with," said Johannes Ullrich, chief technology officer at the SANS Internet Storm Center in Quincy, Mass. "Just the same, we still have to be aware of the possibility of a security issue arising as a result of the theft," said Edward York, CTO at 724 Inc., an application service provider in Lompoc, Calif. This is especially true given the lack of information coming from Cisco, users and analysts said. Gartner's Pescatore noted that the question that always gets raised when incidents such as this occur is, "If this got out, what else was going on?" _________________________________________ ISN mailing list Sponsored by: OSVDB.org

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