[ISN] Exchange ready to test secure code development in real world

From: InfoSec News (isnat_private)
Date: Mon Jun 30 2003 - 00:42:12 PDT

  • Next message: InfoSec News: "RE: [ISN] Cyber security chief sees 'business approach' at DHS"

    http://www.nwfusion.com/news/2003/0627trustmicrosoft.html
    
    By John Fontana
    Network World Fusion
    06/27/03
    
    When Microsoft completes development of Exchange 2003 next week it 
    will not only be the end of a three-year effort but the beginning of a 
    real-world gauntlet to test Microsoft's promise to develop more secure 
    code. 
    
    The company next week is releasing Exchange 2003 to manufacturing, 
    which means CDs will be burned and made available to customers in the 
    coming months. Microsoft also will announce pricing and licensing. 
    
    The software is only the second major server behind the April release 
    of Windows 2003 that Microsoft has developed under the Trustworthy 
    Computing banner, which chief software architect Bill Gates hung out 
    in January 2002. 
    
    Gates vowed to make security a top priority when developing code, 
    trumping Microsoft's infatuation with feature bloat. After Gates’s 
    declaration, Microsoft developers set aside work for two months to 
    learn what it takes to write secure code. 
    
    While the move was well hyped, the proof is in the software and 
    Exchange 2003 is the test case scenario.
    
    While the Exchange server hasn't been a high profile target, its 
    Outlook client has been a hacker's playground. New server features, 
    however, such as allowing direct client connections to the server over 
    HTTP, could potentially open up avenues for malicious activity and the 
    Exchange team is bent on closing holes. 
    
    "How we know quality is there is very subjective, part of it is your 
    gut," says Betsy Speare, Exchange 2003 release manager, who oversaw 
    daily staff meetings and code builds. "The question is what are your 
    development motivators. If they are around ship dates you won’t make 
    the same decisions compared to your responsibility being the quality 
    of the software." 
    
    The beginning Speare's gut feeling began in March 2002, when the 
    450-strong Exchange team, including 175 developers and 175 testers, 
    took eight weeks off for its Trustworthy Computing lesson. Once back 
    to business, the focus was on code reviews, which are done for every 
    new feature added, and threat analysis on such Exchange components as 
    the message store, transport, and Active Directory integration, 
    according to Simon Attwell, Exchange security program manager. The 
    Exchange team used tools developed by Microsoft Research to 
    automatically check code for known vulnerabilities such as buffer 
    overflows. The tools churned through the code at each "build" and 
    updated an issue tracking system. Attwell says the process was a 
    welcomed change to the manual one used during the development of 
    Exchange 2000. 
    
    Other processes also were done differently, says Speare. There was 
    more upfront planning to establish development criteria and 
    milestones, which led to the elimination of the typical 
    round-the-clock marathons in the last week before a final release, she 
    said. 
    
    "Planning gave us time to make better decisions along the way," says 
    Speare.
    
    Microsoft also had its 53 Joint Development Partners deploy some 
    170,000 seats of Exchange 2003 as compared to 80,000 during 
    development of Exchange 2000. Every five weeks JDP customers and 
    Microsoft’s Operations Technology Group (OTG), the internal IT 
    department, got a new version of the code after it passed a couple of 
    weeks of uptime in Microsoft’s "dog food" testing lab. 
    
    The company also polled feedback from its own end-users once OTG had 
    Exchange 2003 running live in November. It was the first time the 
    company had polled end-users during development and the process was 
    done every week until launch. 
    
    Also in November, Microsoft prepared for the release of its first 
    beta, which shipped in January 2003. Exchange testers spent three 
    months checking features against established release criteria. 
    
    In February and March, with the feature set complete, development 
    ceased and the focus was on finding and fixing security issues. It was 
    the first time ever such a process had been initiated in the 
    development cycle. 
    
    Independent security testing firm @stake, which works with four of the 
    top 10 software vendors, was brought in to do two-weeks of penetration 
    testing, including close scrutiny of possible vulnerabilities in 
    client connections. 
    
    Chris Wysopal, director of research and development for @stake said 
    his team found about 30 bugs and made two recommendations to meet 
    Microsoft’s "secure by default" criteria, including changing a default 
    so the only open RPC port was the one used by Outlook to talk to 
    Exchange. 
    
    Microsoft followed with its own internal security task force review 
    during March.
    
    The Exchange team spent from late March to mid-May on 1,000 release 
    criteria tests, a series of scenario-based tests such as deploying 
    public folders in a clustered environment with a diverse set of client 
    access options. There was also another three-week test period with JDP 
    customers and Microsoft’s OTG before the first release candidate was 
    shipped on June 2. OTG continued with its testing up until the code 
    was released to manufacturing. 
    
    "We are feeling very confident about this product," says Microsoft’s 
    Attwell.
    
    Confidence and a battery of new secure development techniques not 
    withstanding, the real testing in set to begin on the customer 
    gauntlet. 
    
    The pricing of the base server has not changed compared to Exchange 
    2000. The Standard Edition is priced at $699 per CPU and is targeted 
    at 50 to 5,000 users. The Standard Edition will support Outlook Web 
    Access, the browser client that runs off the Exchange server. The 
    Enterprise Edition is priced at $3,999 per CPU and includes support 
    for clustering and storage. 
    
    The general availability of Exchange 2003 is expected to coincide with 
    the release of Office 2003, which includes the Outlook 2003 client.
    
    
    
    -
    ISN is currently hosted by Attrition.org
    
    To unsubscribe email majordomoat_private with 'unsubscribe isn'
    in the BODY of the mail.
    



    This archive was generated by hypermail 2b30 : Mon Jun 30 2003 - 03:10:36 PDT