From owner-freebsd-questions@FreeBSD.ORG Sun Apr 24 17:36:40 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5101F1065670 for ; Sun, 24 Apr 2011 17:36:40 +0000 (UTC) (envelope-from modulok@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id 105E38FC08 for ; Sun, 24 Apr 2011 17:36:39 +0000 (UTC) Received: by gyg13 with SMTP id 13so615522gyg.13 for ; Sun, 24 Apr 2011 10:36:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=09Tw7JPr4ItzQEr42rEwY4xBkil3kAMi7fWOVb5MwY8=; b=kosbsYsvmn+PgPFCsfEnjHE+SrAVdOVJg+tgrQCQGMFLoMC2ihEyTzxvFOhQhGomYj 8jtVeosb10ueeQbaJHLYX3nE5Znz23pimDC1h6SKseFltEoqO9joUrH+R95krXRU5asd 3XbVYrHJOGdpdo7tsSvaqoF+Bwx0bKIcN6A/M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=WLxz4xaktnX0bqvimrqW7F/SS3aoGM82gvLtPXqszx5VOnxkd3IkFRO00V6+v/bsdt jfPnGA8Q+evzVAv+Vh+zPGbcHxA4L8syKmo38KeLmuuLo6AFIKXn9JFtlwrNMnuYZcuX emYaPVCZ4SWlb/7Kx15/8qJZYJrDjhjPAHpjM= MIME-Version: 1.0 Received: by 10.101.32.1 with SMTP id k1mr1664441anj.0.1303665033932; Sun, 24 Apr 2011 10:10:33 -0700 (PDT) Received: by 10.100.106.1 with HTTP; Sun, 24 Apr 2011 10:10:33 -0700 (PDT) Date: Sun, 24 Apr 2011 11:10:33 -0600 Message-ID: From: Modulok To: FreeBSD Questions Content-Type: text/plain; charset=ISO-8859-1 Subject: Password theft from memory? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Apr 2011 17:36:40 -0000 I don't know if this is a problem on FreeBSD... Process A requests memory. Process A Stores a plaintext password in memory or other sensitive data. Process A terminates and the memory is reclaimed by kernel. Process B requests a *huge* chunk of memory. Process B crawls the uninitialized memory, looking for ProcessA's previously stored password. Does anyone know if this is even possible on FreeBSD? Thanks! -Modulok-