From owner-svn-src-head@freebsd.org Thu Aug 9 02:47:23 2018 Return-Path: Delivered-To: svn-src-head@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 979C6107697F; Thu, 9 Aug 2018 02:47:23 +0000 (UTC) (envelope-from delphij@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 42B977AF4D; Thu, 9 Aug 2018 02:47:23 +0000 (UTC) (envelope-from delphij@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 21F4C136DA; Thu, 9 Aug 2018 02:47:23 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w792lNoU093602; Thu, 9 Aug 2018 02:47:23 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w792lMrj093601; Thu, 9 Aug 2018 02:47:22 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201808090247.w792lMrj093601@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Thu, 9 Aug 2018 02:47:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r337522 - head/usr.sbin/tzsetup X-SVN-Group: head X-SVN-Commit-Author: delphij X-SVN-Commit-Paths: head/usr.sbin/tzsetup X-SVN-Commit-Revision: 337522 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Aug 2018 02:47:23 -0000 Author: delphij Date: Thu Aug 9 02:47:22 2018 New Revision: 337522 URL: https://svnweb.freebsd.org/changeset/base/337522 Log: In read_zones(), check if the file name actually fit in the buffer and make sure it would terminate with nul with strlcpy(). Reviewed by: imp (earlier revision) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D16595 Modified: head/usr.sbin/tzsetup/tzsetup.c Modified: head/usr.sbin/tzsetup/tzsetup.c ============================================================================== --- head/usr.sbin/tzsetup/tzsetup.c Thu Aug 9 02:27:18 2018 (r337521) +++ head/usr.sbin/tzsetup/tzsetup.c Thu Aug 9 02:47:22 2018 (r337522) @@ -481,7 +481,7 @@ read_zones(void) char contbuf[16]; FILE *fp; struct continent *cont; - size_t len; + size_t len, contlen; char *line, *tlc, *file, *descr, *p; int lineno; @@ -504,12 +504,16 @@ read_zones(void) path_zonetab, lineno, tlc); /* coord = */ strsep(&line, "\t"); /* Unused */ file = strsep(&line, "\t"); + /* get continent portion from continent/country */ p = strchr(file, '/'); if (p == NULL) errx(1, "%s:%d: invalid zone name `%s'", path_zonetab, lineno, file); - contbuf[0] = '\0'; - strncat(contbuf, file, p - file); + contlen = p - file + 1; /* trailing nul */ + if (contlen > sizeof(contbuf)) + errx(1, "%s:%d: continent name in zone name `%s' too long", + path_zonetab, lineno, file); + strlcpy(contbuf, file, contlen); cont = find_continent(contbuf); if (!cont) errx(1, "%s:%d: invalid region `%s'", path_zonetab,