Date: Wed, 3 Jul 2013 22:22:29 +0000 (UTC) From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r252633 - head/sbin/dhclient Message-ID: <201307032222.r63MMT8p041093@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: pjd Date: Wed Jul 3 22:22:29 2013 New Revision: 252633 URL: http://svnweb.freebsd.org/changeset/base/252633 Log: MFp4 @229487: Revoke all capability rights from STDIN and allow only for write to STDOUT and STDERR. All those descriptors are redirected to /dev/null. Reviewed by: brooks Sponsored by: The FreeBSD Foundation Modified: head/sbin/dhclient/dhclient.c Modified: head/sbin/dhclient/dhclient.c ============================================================================== --- head/sbin/dhclient/dhclient.c Wed Jul 3 22:21:11 2013 (r252632) +++ head/sbin/dhclient/dhclient.c Wed Jul 3 22:22:29 2013 (r252633) @@ -2379,6 +2379,13 @@ go_daemon(void) close(nullfd); nullfd = -1; } + + if (cap_rights_limit(STDIN_FILENO, CAP_NONE) < 0 && errno != ENOSYS) + error("can't limit stdin: %m"); + if (cap_rights_limit(STDOUT_FILENO, CAP_WRITE) < 0 && errno != ENOSYS) + error("can't limit stdout: %m"); + if (cap_rights_limit(STDERR_FILENO, CAP_WRITE) < 0 && errno != ENOSYS) + error("can't limit stderr: %m"); } int
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201307032222.r63MMT8p041093>