HackrNews

Wep0ff is new tool to crack WEP-key without access to AP by mount fake access point attack against WEP-based wireless clients.

It uses combination of fragmentation and evil twin attacks to generate
traffic which can be used for KoreK-style WEP-key recovery.

This tool can be used to mount fake access point attack against WEP-based wireless clients.

Wep0ff is new tool to crack WEP-key without access to AP by mount fake access point attack against WEP-based wireless clients.

It uses combination of fragmentation and evil twin attacks to generate
traffic which can be used for KoreK-style WEP-key recovery.

This tool can be used to mount fake access point attack against WEP-based wireless clients.

You can download it here:

Wep0ff

Oracle Corp. has published a collection of software patches that address security vulnerabilities in a range of the company’s products, including its database and application server software. As part of this update, it also released a tool designed to ferret out commonly used default passwords that theoretically could be misused by hackers.

Earlier versions of Oracle’s database software included well-known default passwords and user names, for example “scott / tiger”. These accounts are also known to have been created by other software, such as application servers, that interact with the database, said Oracle Security Alerts Manager Darius Wiles

    The password scanner is a SQL (Structured Query Language) script that scans the database and then prints out the names of these well-known accounts if they are unlocked, Wiles said. “This tool is designed to catch those instances and then explain to customers the right thing to do to secure their systems.”The password scanner is a SQL (Structured Query Language) script that scans the database and then prints out the names of these well-known accounts if they are unlocked, Wiles said. “This tool is designed to catch those instances and then explain to customers the right thing to do to secure their systems.”

This page is the home for the Oracle default password list that we have collated. The list can also be thought of as a list of Oracle default password hashes.

The full details of the release can be found from Oracle Here (Oracle Critical Patch Update – April 2006).

By: Ankit Talwar

A last resort is to try every possible password, known as a brute force attack. In theory, a brute force attack will always be successful since the rules for acceptable passwords must be publicly known, but as the number of possible passwords increases very rapidly as the length of the password increases, this method is unlikely to be practical unless the password is relatively small. But, how small is too small? A common current length recommendation is 8 or more randomly chosen characters combining letters, numbers, and special (punctuation, etc) characters. Systems which limit passwords to numeric characters only, or upper case only, or, generally, which exclude possible password character choices make such attacks easier. Using longer passwords in such cases (if possible on a particular system) can compensate for a limited allowable character set. and, of course, even with an adequate range of character choice, users who ignore that range (using only upper case alphabetic characters, or digits alone, for instance) make brute force attacks much easier against those password choices.

Generic brute-force search techniques can be used to speed up the computation. But the real threat may be likely to be from smart brute-force techniques that exploit knowledge about how people tend to choose passwords. NIST SP 800-63 (2) provides further discussion of password quality, and suggests, for example, that an 8 character user-chosen password may provide somewhere between 18 and 30 bits of entropy, depending on how it is chosen. Note: This number is very far less than what is generally considered to be safe for an encryption key.

How small is too small thus depends partly on an attacker’s ingenuity and resources (e.g., available time, computing power, etc.), the latter of which will increase as computers get faster. Most commonly used hashes can be implemented using specialized hardware, allowing faster attacks. Large numbers of computers can be harnessed in parallel, each trying a separate portion of the search space. Unused overnight and weekend time on office computers can also be used for this purpose.

The distinction between guessing, dictionary and brute force attacks is not strict. They are similar in that an attacker goes through a list of candidate passwords one by one; the list may be explicitly enumerated or implicitly defined, may or may not incorporate knowledge about the victim, and may or may not be linguistically derived. Each of the three approaches, particularly ‘dictionary attack’, is frequently used as an umbrella term to denote all the three attacks and the spectrum of attacks encompassed by them.