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Gentoo's Bugzilla – Attachment 245460 Details for
Bug 335381
<app-admin/sudo-1.7.4_p3-r1: Privilege escalation related to groups (CVE-2010-2956)
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sudo-1.7.4_p3-r1.ebuild
sudo-1.7.4_p3-r1.ebuild (text/plain), 7.10 KB, created by
Diego Elio Pettenò (RETIRED)
on 2010-08-31 11:21:52 UTC
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Description:
sudo-1.7.4_p3-r1.ebuild
Filename:
MIME Type:
Creator:
Diego Elio Pettenò (RETIRED)
Created:
2010-08-31 11:21:52 UTC
Size:
7.10 KB
patch
obsolete
># Copyright 1999-2010 Gentoo Foundation ># Distributed under the terms of the GNU General Public License v2 ># $Header: /var/cvsroot/gentoo-x86/app-admin/sudo/sudo-1.7.4_p3.ebuild,v 1.1 2010/08/19 12:03:59 flameeyes Exp $ > >inherit eutils pam > >MY_P=${P/_/} >MY_P=${MY_P/beta/b} > >case "${P}" in > *_beta* | *_rc*) > uri_prefix=beta/ > ;; > *) > uri_prefix="" > ;; >esac > >DESCRIPTION="Allows users or groups to run commands as other users" >HOMEPAGE="http://www.sudo.ws/" >SRC_URI="http://www.sudo.ws/sudo/dist/${uri_prefix}${MY_P}.tar.gz > ftp://ftp.sudo.ws/pub/sudo/${uri_prefix}${MY_P}.tar.gz" > ># Basic license is ISC-style as-is, some files are released under ># 3-clause BSD license >LICENSE="as-is BSD" > >SLOT="0" >KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~sparc-fbsd ~x86-fbsd" >IUSE="pam skey offensive ldap selinux" > >DEPEND="pam? ( virtual/pam ) > ldap? ( > >=net-nds/openldap-2.1.30-r1 > dev-libs/cyrus-sasl > ) > !pam? ( skey? ( >=sys-auth/skey-1.1.5-r1 ) ) > app-editors/gentoo-editor > virtual/editor > virtual/mta" >RDEPEND="selinux? ( sec-policy/selinux-sudo ) > ldap? ( dev-lang/perl ) > pam? ( sys-auth/pambase ) > ${DEPEND}" >DEPEND="${DEPEND} > sys-devel/bison" > >S=${WORKDIR}/${MY_P} > >pkg_setup() { > if use pam && use skey; then > ewarn "You cannot enable both S/KEY and PAM at the same time, PAM will" > ewarn "be used then." > fi >} > >src_unpack() { > unpack ${A}; cd "${S}" > > # compatability fix. > epatch "${FILESDIR}"/${PN}-skeychallengeargs.diff > > epatch "${FILESDIR}"/${PN}-CVE-2010-2956.patch > > # additional variables to disallow, should user disable env_reset. > > # NOTE: this is not a supported mode of operation, these variables > # are added to the blacklist as a convenience to administrators > # who fail to heed the warnings of allowing untrusted users > # to access sudo. > # > # there is *no possible way* to foresee all attack vectors in > # all possible applications that could potentially be used via > # sudo, these settings will just delay the inevitable. > # > # that said, I will accept suggestions for variables that can > # be misused in _common_ interpreters or libraries, such as > # perl, bash, python, ruby, etc., in the hope of dissuading > # a casual attacker. > > # XXX: perl should be using suid_perl. > # XXX: users can remove/add more via env_delete and env_check. > # XXX: <?> = probably safe enough for most circumstances. > > einfo "Blacklisting common variables (env_delete)..." > sudo_bad_var() { > local target='env.c' marker='\*initial_badenv_table\[\]' > > ebegin " $1" > sed -i 's#\(^.*'${marker}'.*$\)#\1\n\t"'${1}'",#' "${S}"/${target} > eend $? > } > > sudo_bad_var 'PERLIO_DEBUG' # perl, write debug to file. > sudo_bad_var 'FPATH' # ksh, search path for functions. > sudo_bad_var 'NULLCMD' # zsh, command on null-redir. <?> > sudo_bad_var 'READNULLCMD' # zsh, command on null-redir. <?> > sudo_bad_var 'GLOBIGNORE' # bash, glob paterns to ignore. <?> > sudo_bad_var 'PYTHONHOME' # python, module search path. > sudo_bad_var 'PYTHONPATH' # python, search path. > sudo_bad_var 'PYTHONINSPECT' # python, allow inspection. > sudo_bad_var 'RUBYLIB' # ruby, lib load path. > sudo_bad_var 'RUBYOPT' # ruby, cl options. > sudo_bad_var 'ZDOTDIR' # zsh, path to search for dotfiles. > einfo "...done." > > # prevent binaries from being stripped. > sed -i 's/\($(INSTALL).*\) -s \(.*[(sudo|visudo)]\)/\1 \2/g' Makefile.in >} > >src_compile() { > local line ROOTPATH > > # FIXME: secure_path is a compile time setting. using ROOTPATH > # is not perfect, env-update may invalidate this, but until it > # is available as a sudoers setting this will have to do. > einfo "Setting secure_path..." > > # why not use grep? variable might be expanded from other variables > # declared in that file. cannot just source the file, would override > # any variables already set. > eval `PS4= bash -x /etc/profile.env 2>&1 | \ > while read line; do > case $line in > ROOTPATH=*) echo $line; break;; > *) continue;; > esac > done` && einfo " Found ROOTPATH..." || \ > ewarn " Failed to find ROOTPATH, please report this." > > # remove duplicate path entries from $1 > cleanpath() { > local i=1 x n IFS=: > local -a paths; paths=($1) > > for ((n=${#paths[*]}-1;i<=n;i++)); do > for ((x=0;x<i;x++)); do > test "${paths[i]}" == "${paths[x]}" && { > einfo " Duplicate entry ${paths[i]} removed..." 1>&2 > unset paths[i]; continue 2; } > done; # einfo " Adding ${paths[i]}..." 1>&2 > done; echo "${paths[*]}" > } > > ROOTPATH=$(cleanpath /bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin${ROOTPATH:+:${ROOTPATH}}) > > # strip gcc path (bug #136027) > rmpath() { > declare e newpath oldpath=${!1} PATHvar=$1 thisp IFS=: > shift > for thisp in $oldpath; do > for e; do [[ $thisp == $e ]] && continue 2; done > newpath=$newpath:$thisp > done > eval $PATHvar='${newpath#:}' > } > > rmpath ROOTPATH '*/gcc-bin/*' > > einfo "...done." > > if use pam; then > myconf="--with-pam --without-skey" > elif use skey; then > myconf="--without-pam --with-skey" > else > myconf="--without-pam --without-skey" > fi > > # audit: somebody got to explain me how I can test this before I > # enable it.. â Diego > econf --with-secure-path="${ROOTPATH}" \ > --with-editor=/usr/libexec/gentoo-editor \ > --with-env-editor \ > $(use_with offensive insults) \ > $(use_with offensive all-insults) \ > $(use_with ldap ldap_conf_file /etc/ldap.conf.sudo) \ > $(use_with ldap) \ > --without-linux-audit \ > --with-timedir=/var/db/sudo \ > --docdir=/usr/share/doc/${PF} \ > ${myconf} > > emake || die >} > >src_install() { > emake DESTDIR="${D}" install || die > > if use ldap; then > dodoc README.LDAP schema.OpenLDAP > dosbin sudoers2ldif > > cat - > "${T}"/ldap.conf.sudo <<EOF ># See ldap.conf(5) and README.LDAP for details\n" ># This file should only be readable by root\n\n" ># supported directives: host, port, ssl, ldap_version\n" ># uri, binddn, bindpw, sudoers_base, sudoers_debug\n" ># tls_{checkpeer,cacertfile,cacertdir,randfile,ciphers,cert,key >EOF > > insinto /etc > doins "${T}"/ldap.conf.sudo > fperms 0440 /etc/ldap.conf.sudo > fi > > pamd_mimic system-auth sudo auth account session > > insinto /etc > doins "${S}"/sudoers > fperms 0440 /etc/sudoers > > keepdir /var/db/sudo > fperms 0700 /var/db/sudo >} > >pkg_postinst() { > if use ldap; then > ewarn > ewarn "sudo uses the /etc/ldap.conf.sudo file for ldap configuration." > ewarn > if egrep -q '^[[:space:]]*sudoers:' "${ROOT}"/etc/nsswitch.conf; then > ewarn "In 1.7 series, LDAP is no more consulted, unless explicitly" > ewarn "configured in /etc/nsswitch.conf." > ewarn > ewarn "To make use of LDAP, add this line to your /etc/nsswitch.conf:" > ewarn " sudoers: ldap files" > ewarn > fi > fi > > elog "To use the -A (askpass) option, you need to install a compatible" > elog "password program from the following list. Starred packages will" > elog "automatically register for the use with sudo (but will not force" > elog "the -A option):" > elog "" > elog " [*] net-misc/ssh-askpass-fullscreen" > elog " net-misc/x11-ssh-askpass" > elog "" > elog "You can override the choice by setting the SUDO_ASKPASS environmnent" > elog "variable to the program you want to use." >}
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bug 335381
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