WordPress shuts door on new PHP attack vector

The WordPress patching hamster wheel keeps on rolling and rolling.
According to an advisory from maintainers of the open-source blog software, WordPress 2.6.2 was released on September 8 to mitigate a new attack vector discovered by PHP security guru Stefan Esser.
From the announcement:
  • Stefan Esser recently warned developers of the dangers of SQL Column Truncation and the weakness of mt_rand(). With his help we worked around these problems and are now releasing WordPress 2.6.2. If you allow open registration on your blog, you should definitely upgrade. With open registration enabled, it is possible in WordPress versions 2.6.1 and earlier to craft a username such that it will allow resetting another user’s password to a randomly generated password. The randomly generated password is not disclosed to the attacker, so this problem by itself is annoying but not a security exploit. However, this attack coupled with a weakness in the random number seeding in mt_rand() could be used to predict the randomly generated password.
[ SEE: Flaw trifecta kicks off Month of PHP bugs ]
WordPress developers said the attack is difficult to accomplish but, because of the associated risk, the patch is being released.
It’s important to note that other PHP applications are vulnerable to this class of attack.

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