There it is, easier than denying your teenage daughter a brand new car, a user can change your password. You will then be prompted to enter a new password for the user. That's simple, not only did Mac slip up on being able to read password hashes, any user can issue the 'passwd' command to change any user's passwords. Wait until it completes and retrieves your password.In a terminal, change to the directory 'hack.py' is in and issue the command with this syntax:.Get a password list to run against the file - you can find good ones at Packet Storm.Copy > paste the code in a text document and name it 'hack.py'.There is one made by the author of the exploit here written in python (brownie points for that, good sir). From there, the user wanting privilege escalation can then load the hash into a password cracker for SHA512 hashes with 4 byte salts. Bytes 28-32 are the password salt (4 bytes are in each octet), and bytes 32-96 are the SHA512 hash. Now, in the terminal output you should see a line in there that says: To see hash data, we just invoke Directory Services using the /Search/ path like so: $ dscl localhost -read /Local/Default/Users/ Normally, to see profile information about a user, you invoke this command in a terminal: Non-root users cannot directly view hash data, but rather, they can extract it from Directory Services. This flaw is averted by only allowing the root user to view the shadow file. The normal way a user would crack this, is to obtain a users Generated User ID (GID) and find it in the shadow file. plist file located in /var/db/dslocal/nodes/Default/users. A user creates an account, and then the encrypted hash of the user's password file, their 'Shadow' file, is saved in a. The way a Mac system stores its user passwords is similar to Linux, as they are both built off of the Unix kernel. Let's go over why this happens, and how to stop it until a patch comes out. This would lead to the legitimate owner of the system getting locked out, as well as all of their files being compromised (unless disc encryption was in place). This exploit allows for an attacker, even remotely, to request to have the root user's password changed without knowing the password to the system beforehand. On Sunday, September 19th, an exploit for the latest Mac OS X 10.7 'Lion' was discovered by Patrick Dunstan.

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