commit: 16e1279e1a0b87ab89031972ea5b9f5136a67e76 Author: Eray Aslan <eras <AT> gentoo <DOT> org> AuthorDate: Wed Jan 5 09:56:43 2022 +0000 Commit: Eray Aslan <eras <AT> gentoo <DOT> org> CommitDate: Wed Jan 5 09:56:43 2022 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=16e1279e
app-crypt/mit-krb5: security bump Bug: https://bugs.gentoo.org/809845 Package-Manager: Portage-3.0.30, Repoman-3.0.3 Signed-off-by: Eray Aslan <eras <AT> gentoo.org> .../mit-krb5/files/mit-krb5-CVE-2021-37750.patch | 43 ++++++ app-crypt/mit-krb5/mit-krb5-1.19.2-r2.ebuild | 165 +++++++++++++++++++++ 2 files changed, 208 insertions(+) diff --git a/app-crypt/mit-krb5/files/mit-krb5-CVE-2021-37750.patch b/app-crypt/mit-krb5/files/mit-krb5-CVE-2021-37750.patch new file mode 100644 index 000000000000..2f4c949e9f31 --- /dev/null +++ b/app-crypt/mit-krb5/files/mit-krb5-CVE-2021-37750.patch @@ -0,0 +1,43 @@ +From d775c95af7606a51bf79547a94fa52ddd1cb7f49 Mon Sep 17 00:00:00 2001 +From: Greg Hudson <ghud...@mit.edu> +Date: Tue, 3 Aug 2021 01:15:27 -0400 +Subject: [PATCH] Fix KDC null deref on TGS inner body null server + +After the KDC decodes a FAST inner body, it does not check for a null +server. Prior to commit 39548a5b17bbda9eeb63625a201cfd19b9de1c5b this +would typically result in an error from krb5_unparse_name(), but with +the addition of get_local_tgt() it results in a null dereference. Add +a null check. + +Reported by Joseph Sutton of Catalyst. + +CVE-2021-37750: + +In MIT krb5 releases 1.14 and later, an authenticated attacker can +cause a null dereference in the KDC by sending a FAST TGS request with +no server field. + +ticket: 9008 (new) +tags: pullup +target_version: 1.19-next +target_version: 1.18-next +--- + src/kdc/do_tgs_req.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/src/kdc/do_tgs_req.c b/src/kdc/do_tgs_req.c +index 582e497cc9..32dc65fa8e 100644 +--- a/kdc/do_tgs_req.c ++++ b/kdc/do_tgs_req.c +@@ -204,6 +204,11 @@ process_tgs_req(krb5_kdc_req *request, krb5_data *pkt, + status = "FIND_FAST"; + goto cleanup; + } ++ if (sprinc == NULL) { ++ status = "NULL_SERVER"; ++ errcode = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN; ++ goto cleanup; ++ } + + errcode = get_local_tgt(kdc_context, &sprinc->realm, header_server, + &local_tgt, &local_tgt_storage, &local_tgt_key); diff --git a/app-crypt/mit-krb5/mit-krb5-1.19.2-r2.ebuild b/app-crypt/mit-krb5/mit-krb5-1.19.2-r2.ebuild new file mode 100644 index 000000000000..cd2e67613dd3 --- /dev/null +++ b/app-crypt/mit-krb5/mit-krb5-1.19.2-r2.ebuild @@ -0,0 +1,165 @@ +# Copyright 1999-2022 Gentoo Authors +# Distributed under the terms of the GNU General Public License v2 + +EAPI=8 + +PYTHON_COMPAT=( python3_{8..10} ) +inherit autotools flag-o-matic multilib-minimal python-any-r1 systemd toolchain-funcs + +MY_P="${P/mit-}" +P_DIR=$(ver_cut 1-2) +DESCRIPTION="MIT Kerberos V" +HOMEPAGE="https://web.mit.edu/kerberos/www/"; +SRC_URI="https://web.mit.edu/kerberos/dist/krb5/${P_DIR}/${MY_P}.tar.gz"; + +LICENSE="openafs-krb5-a BSD MIT OPENLDAP BSD-2 HPND BSD-4 ISC RSA CC-BY-SA-3.0 || ( BSD-2 GPL-2+ )" +SLOT="0" +KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86" +IUSE="cpu_flags_x86_aes doc +keyutils lmdb nls openldap +pkinit selinux +threads test xinetd" + +# some tests requires network access +RESTRICT="test" + +DEPEND=" + !!app-crypt/heimdal + || ( + >=sys-fs/e2fsprogs-1.46.4-r51[${MULTILIB_USEDEP}] + sys-libs/e2fsprogs-libs[${MULTILIB_USEDEP}] + ) + || ( + >=dev-libs/libverto-0.2.5[libev,${MULTILIB_USEDEP}] + >=dev-libs/libverto-0.2.5[libevent,${MULTILIB_USEDEP}] + ) + keyutils? ( >=sys-apps/keyutils-1.5.8:=[${MULTILIB_USEDEP}] ) + lmdb? ( dev-db/lmdb ) + nls? ( sys-devel/gettext[${MULTILIB_USEDEP}] ) + openldap? ( >=net-nds/openldap-2.4.38-r1[${MULTILIB_USEDEP}] ) + pkinit? ( >=dev-libs/openssl-1.0.1h-r2:0=[${MULTILIB_USEDEP}] ) + xinetd? ( sys-apps/xinetd ) + " +BDEPEND=" + ${PYTHON_DEPS} + virtual/yacc + cpu_flags_x86_aes? ( + amd64? ( dev-lang/yasm ) + x86? ( dev-lang/yasm ) + ) + doc? ( virtual/latex-base ) + test? ( + ${PYTHON_DEPS} + dev-lang/tcl:0 + dev-util/dejagnu + dev-util/cmocka + )" +RDEPEND="${DEPEND} + selinux? ( sec-policy/selinux-kerberos )" + +S=${WORKDIR}/${MY_P}/src + +PATCHES=( + "${FILESDIR}/${PN}-1.12_warn_cflags.patch" + "${FILESDIR}/${PN}-config_LDFLAGS-r1.patch" + "${FILESDIR}/${PN}_dont_create_rundir.patch" + "${FILESDIR}/${PN}-1.18.2-krb5-config.patch" + "${FILESDIR}/${PN}-CVE-2021-37750.patch" +) + +MULTILIB_CHOST_TOOLS=( + /usr/bin/krb5-config +) + +src_prepare() { + default + # Make sure we always use the system copies. + rm -rf util/{et,ss,verto} + sed -i 's:^[[:space:]]*util/verto$::' configure.ac || die + + eautoreconf +} + +src_configure() { + # QA + append-flags -fno-strict-aliasing + append-flags -fno-strict-overflow + + multilib-minimal_src_configure +} + +multilib_src_configure() { + ECONF_SOURCE=${S} \ + AR="$(tc-getAR)" \ + WARN_CFLAGS="set" \ + econf \ + $(use_with openldap ldap) \ + "$(multilib_native_use_with test tcl "${EPREFIX}/usr")" \ + $(use_enable nls) \ + $(use_enable pkinit) \ + $(use_enable threads thread-support) \ + $(use_with lmdb) \ + $(use_with keyutils) \ + --without-hesiod \ + --enable-shared \ + --with-system-et \ + --with-system-ss \ + --enable-dns-for-realm \ + --enable-kdc-lookaside-cache \ + --with-system-verto \ + --disable-rpath +} + +multilib_src_compile() { + emake -j1 +} + +multilib_src_test() { + multilib_is_native_abi && emake -j1 check +} + +multilib_src_install() { + emake \ + DESTDIR="${D}" \ + EXAMPLEDIR="${EPREFIX}/usr/share/doc/${PF}/examples" \ + install +} + +multilib_src_install_all() { + # default database dir + keepdir /var/lib/krb5kdc + + cd .. + dodoc README + + if use doc; then + dodoc -r doc/html + docinto pdf + dodoc doc/pdf/*.pdf + fi + + newinitd "${FILESDIR}"/mit-krb5kadmind.initd-r2 mit-krb5kadmind + newinitd "${FILESDIR}"/mit-krb5kdc.initd-r2 mit-krb5kdc + newinitd "${FILESDIR}"/mit-krb5kpropd.initd-r2 mit-krb5kpropd + newconfd "${FILESDIR}"/mit-krb5kadmind.confd mit-krb5kadmind + newconfd "${FILESDIR}"/mit-krb5kdc.confd mit-krb5kdc + newconfd "${FILESDIR}"/mit-krb5kpropd.confd mit-krb5kpropd + + systemd_newunit "${FILESDIR}"/mit-krb5kadmind.service mit-krb5kadmind.service + systemd_newunit "${FILESDIR}"/mit-krb5kdc.service mit-krb5kdc.service + systemd_newunit "${FILESDIR}"/mit-krb5kpropd.service mit-krb5kpropd.service + systemd_newunit "${FILESDIR}"/mit-krb5kpropd_at.service "mit-krb5kpropd@.service" + systemd_newunit "${FILESDIR}"/mit-krb5kpropd.socket mit-krb5kpropd.socket + + insinto /etc + newins "${ED}/usr/share/doc/${PF}/examples/krb5.conf" krb5.conf.example + insinto /var/lib/krb5kdc + newins "${ED}/usr/share/doc/${PF}/examples/kdc.conf" kdc.conf.example + + if use openldap ; then + insinto /etc/openldap/schema + doins "${S}/plugins/kdb/ldap/libkdb_ldap/kerberos.schema" + fi + + if use xinetd ; then + insinto /etc/xinetd.d + newins "${FILESDIR}/kpropd.xinetd" kpropd + fi +}
