oss-security - Re: php mb_ereg

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Date: Wed, 13 May 2009 10:47:01 -0400 (EDT)
From: "Steven M. Christey" <coley@...us.mitre.org>
To: oss-security@...ts.openwall.com
Subject: Re: php mb_ereg_replace()

On Wed, 13 May 2009, Christian Hoffmann wrote:

> Regarding CVE... I'm not sure. It is not a vulnerability in PHP. It's a
> missing functionality which very very easily leads to severe security
> problems in apps which make use of the affected functions. And, this
> missing functionality is usually expected to be there, as preg_replace
> works like that. So.. tough case, imo.

We don't have a CVE for the fact that strcpy() exists - it can be used
safely even though it's dangerous.  My interpretation of this issue was
the same, so no CVE is needed.  Any PHP application that misuses
mb_ereg_replace(), however, is fair game.

(We already have a handful of CVEs for executable regexp's in PHP apps)

- Steve

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