Neil Carpenter's Blog

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  • Blog Post: Anatomy of a SQL Injection Incident, Part 2: Meat

    Intro It would appear that the incident I wrote about yesterday is still ongoing. I've been using a search engine to query for the *.js file that's being injected and it looks something like this: Wednesday: 10K hits (This is Avert's number. I didn't look until Thu.) Thursday: 12.1K hits Friday: 12.9K...
  • Blog Post: SQLInjectionFinder

    My colleague Greg , who has forgotten more about command line scripting than I will ever know, put together a sample on CodePlex that automates finding SQL injection attacks from the ongoing mass SQL injection attack ("SQL Storm", as I saw it dubbed today).  This is a fairly convenient...
  • Blog Post: Detecting ARP Spoofing Attacks

    After investigating an ARP spoofing incident recently, I started thinking of how we could easily ferret out this sort of information when responding to a potential incident. In this particular case, there were two important parts of the attack: ARP spoofing forced all traffic bound for the default gateway...
  • Blog Post: Incident Response: The Importance of Anti-Virus

    Heading home from the CSS Security Global Summit on Friday, I got stuck in Cincinnati’s airport. While walking through baggage claim, I saw this displayed on the arrivals board: (I didn’t have a proper camera with me so, if that’s hard to read, it’s a Symantec AntiVirus Auto-Protect notification of...
  • Blog Post: PASSGEN

    Occasionally, I see a security incident where one of the things that went wrong was that all of the customer's machines have the same password for the built-in administrator's account.  Whenever this happens, I suggest the PASSGEN tool that was included with the book "Protect Your Windows Network"...
  • Blog Post: Input Validation Is Not The Answer

    I just sent a piece of e-mail to my team about input validation and SQL injection and it occurred to me that I've been meaning to get into this here, too: If you're trying to solve a SQL injection problem, input validation is NOT the answer! There, I've said it. I keep seeing blog posts, forum posts...
  • Blog Post: SQL Injection Mitigation: Using Parameterized Queries

    Michael Howard wrote an excellent article yesterday on how the SDL addresses SQL injection . He walks through three coding requirements/defenses: Use SQL Parameterized Queries Use Stored Procedures Use SQL Execute-only Permissions As Michael points out, only the first, parameterized queries...
  • Blog Post: Anatomy of a SQL Injection Incident

    A number of people are reporting that 10K+ websites have been hacked via a SQL injection attack that injected a link to a malicious .js file into text fields in their database. For example, here's Avert Labs report . The reports that I've seen talk about how the .js file tries to compromise clients that...
  • Blog Post: LogParser, Event Logs, and Vista

    LogParser is one of my absolute favorite tools, particularly for doing incident response. I use it a lot to extract and order data into a timeline (hmmm...that's a good topic for a future post). When I moved to Vista, I found one annoyance, though. The log file format in Vista has changed from *.evt...
  • Blog Post: Mass SQL Injection -- Get Used To It

    It looks like another wave of the mass SQL injection I talked about last month is going on.  The inserted link is different and, in the one specific incident I've seen, the source IP address is different; however, other than that, the attack looks to be identical. 2.1K websites so far, this month...
  • Blog Post: SQL Storm: Possible ASP.Net

    I’ve had an unconfirmed report that the SQL Storm attacks are now also affecting ASP.Net pages, specifically with a  URL of http://www.chliyi.com/m.js (this appears to be offline currently but I wouldn't suggest browsing there...) being injected into those pages.  My team hasn’t...
  • Blog Post: SQL Injection Mitigation: Using Parameterized Queries part 2 (types and recordsets)

    (Part 1 is here ) Previously, I provided a simple example of using parameterized queries in classic ASP; however, that sample lacked a few things such as explicit typing for the parameters. It also created a read-only ADODB.RecordSet which, obviously, isn't one-size-fits-all. Typing In the last...
  • Blog Post: SQL Injection: Trends & Guidance

    I've been working with the SWI team to write a comprehensive overview of the SQL Storm attacks with guidance for IT administrators, developers, and end users.  That article is posted at sql-injection-attack.aspx . For developers, specifically, Bala Neerumalla has written an excellent overview of...
  • Blog Post: SQL Injection Hijinks

    or Why I Keep Harping On Blacklisting Summary: An incident reveals attempts to get around blacklisting by manipulating behavior in ASP, illustrating the weakness of blacklist approaches. A new version of UrlScan is shipping today with a change specifically to address this. Discussion:...
  • Blog Post: ARP Cache Poisoning Incident

    I recently worked on an interesting incident response with several of my colleagues. The problem, as defined by the customer, is that the following code is being injected into some websites (both external and internal to his environment) that his users are surfing: <iframe src=http://<redacted>...
  • Blog Post: SQL Injection -- A Comment

    Kumar comments here and I think he has some questions/concerns that are worth addressing.  I'm going to add my own comments (and, please note, the comments I make here are my own and do not necessarily reflect Microsoft's corporate opinions). ----------------------------------------------------...
  • Blog Post: Good News

    The good news is that, whatever else might happen, these guys won't get pwned by SQL injection.   (Via GrumpySecurityGuy .)