From owner-svn-src-all@freebsd.org Tue Feb 6 21:35:42 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 19963F08BD9; Tue, 6 Feb 2018 21:35:42 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BC55C82BD6; Tue, 6 Feb 2018 21:35:41 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id B6B691D9A1; Tue, 6 Feb 2018 21:35:41 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w16LZfSH020198; Tue, 6 Feb 2018 21:35:41 GMT (envelope-from feld@FreeBSD.org) Received: (from feld@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w16LZfLD020197; Tue, 6 Feb 2018 21:35:41 GMT (envelope-from feld@FreeBSD.org) Message-Id: <201802062135.w16LZfLD020197@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: feld set sender to feld@FreeBSD.org using -f From: Mark Felder Date: Tue, 6 Feb 2018 21:35:41 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328951 - head/etc/rc.d X-SVN-Group: head X-SVN-Commit-Author: feld X-SVN-Commit-Paths: head/etc/rc.d X-SVN-Commit-Revision: 328951 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Feb 2018 21:35:42 -0000 Author: feld (ports committer) Date: Tue Feb 6 21:35:41 2018 New Revision: 328951 URL: https://svnweb.freebsd.org/changeset/base/328951 Log: Refactor cleanvar to remove shell expansion vulnerability If any process creates a directory named "-P" in /var/run or /var/spool/lock it will cause the purgedir function to start to rm -r /. Simplify a lot of complicated shell logic by leveraging find(1). Reviewed by: allanjude MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D13778 Modified: head/etc/rc.d/cleanvar Modified: head/etc/rc.d/cleanvar ============================================================================== --- head/etc/rc.d/cleanvar Tue Feb 6 21:01:38 2018 (r328950) +++ head/etc/rc.d/cleanvar Tue Feb 6 21:35:41 2018 (r328951) @@ -19,34 +19,6 @@ stop_cmd=":" extra_commands="reload" reload_cmd="${name}_start" -purgedir() -{ - local dir file - - if [ $# -eq 0 ]; then - purgedir . - else - for dir - do - ( - cd "$dir" && for file in .* * - do - # Skip over logging sockets - [ -S "$file" -a "$file" = "log" ] && continue - [ -S "$file" -a "$file" = "logpriv" ] && continue - [ ."$file" = .. -o ."$file" = ... ] && continue - if [ -d "$file" -a ! -L "$file" ] - then - purgedir "$file" - else - rm -f -- "$file" - fi - done - ) - done - fi -} - cleanvar_prestart() { # These files must be removed only the first time this script is run @@ -58,14 +30,17 @@ cleanvar_prestart() cleanvar_start() { if [ -d /var/run -a ! -f /var/run/clean_var ]; then - purgedir /var/run + # Skip over logging sockets + find /var/run \( -type f -or -type s ! -name log -and ! -name logpriv \) -delete >/var/run/clean_var fi if [ -d /var/spool/lock -a ! -f /var/spool/lock/clean_var ]; then - purgedir /var/spool/lock + find /var/spool/lock -type f -delete >/var/spool/lock/clean_var fi - rm -rf /var/spool/uucp/.Temp/* + if [ -d /var/spool/uucp/.Temp ]; then + find /var/spool/uucp/.Temp -delete + fi } load_rc_config $name