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Thread: Top 10 web app Vulnerabilities

  1. #1
    Senior Member
    Join Date
    Oct 2002

    Post Top 10 web app Vulnerabilities

    Found this today on www.owasp.org.

    It's a list of the top ten current vulnerabilities in web applications.

    Unvalidated Parameters
    Information from web requests is not validated before being used by a web application. Attackers can use these flaws to attack backside components through a web application.

    Broken Access Control
    Restrictions on what authenticated users are allowed to do are not properly enforced. Attackers can exploit these flaws to access other usersí accounts, view sensitive files, or use unauthorized functions.

    Broken Account and Session Management
    Account credentials and session tokens are not properly protected. Attackers that can compromise passwords, keys, session cookies, or other tokens can defeat authentication restrictions and assume other usersí identities.

    Cross-Site Scripting (XSS) Flaws
    The web application can be used as a mechanism to transport an attack to an end userís browser. A successful attack can disclose the end userís session token, attack the local machine, or spoof content to fool the user.

    Buffer Overflows
    Web application components in some languages that do not properly validate input can be crashed and, in some cases, used to take control of a process. These components can include CGI, libraries, drivers, and web application server components.

    Command Injection Flaws
    Web applications pass parameters when they access external systems or the local operating system. If an attacker can embed malicious commands in these parameters, the external system may execute those commands on behalf of the web application.

    Error Handling Problems
    Error conditions that occur during normal operation are not handled properly. If an attacker can cause errors to occur that the web application does not handle, they can gain detailed system information, deny service, cause security mechanisms to fail, or crash the server.

    Insecure Use of Cryptography
    Web applications frequently use cryptographic functions to protect information and credentials. These functions and the code to integrate them have proven difficult to code properly, frequently resulting in weak protection.

    Remote Administration Flaws
    Many web applications allow administrators to access the site using a web interface. If these administrative functions are not very carefully protected, an attacker can gain full access to all aspects of a site.

    Web and Application Server Misconfiguration
    Having a strong server configuration standard is critical to a secure web application. These servers have many configuration options that affect security and are not secure out of the box.

    Any comments?

    I\'m a SittingDuck, but the question is \"Is your web app a Sitting Duck?\"

  2. #2
    Join Date
    Aug 2002
    OK, I didn't know and I apologise if I upset you. I took it from eWeek magazine. I know many of the people on this site are students and don't get all the items from the professional communities. I don't mean to upset anyone.

  3. #3
    Senior Member
    Join Date
    Oct 2002
    I have no problem with you posting it again, I was just saying I beat you to it.

    I\'m a SittingDuck, but the question is \"Is your web app a Sitting Duck?\"

  4. #4
    Ninja Code Monkey
    Join Date
    Nov 2001
    Washington State
    I used this list for ideas for my GSEC practical......


    It goes over some of the basic tests that can be done and areas that may need to be covered when testing web applications.
    "When I get a little money I buy books; and if any is left I buy food and clothes." - Erasmus
    "There is no programming language, no matter how structured, that will prevent programmers from writing bad programs." - L. Flon
    "Mischief my ass, you are an unethical moron." - chsh
    Blog of X

  5. #5
    Senior Member
    Join Date
    Oct 2002
    Very nice Juridian, cover all the major points. Can I make a few suggestions no how to improve it?

    I\'m a SittingDuck, but the question is \"Is your web app a Sitting Duck?\"

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