Merge remote-tracking branch 'mvo/feature/acq-trans' into debian/experimental

1 files changed, 234 insertions, 0 deletions

diff --git a/test/integration/test-apt-update-nofallback b/test/integration/test-apt-update-nofallback
new file mode 100755
index 000000000..321472c2e
--- /dev/null
+++ b/test/integration/test-apt-update-nofallback
@@ -0,0 +1,234 @@
+#!/bin/sh
+#
+# ensure we never fallback from a signed to a unsigned repo
+# 
+# hash checks are done in 
+# 
+set -e
+
+simulate_mitm_and_inject_evil_package()
+{
+    rm -f $APTARCHIVE/dists/unstable/InRelease
+    rm -f $APTARCHIVE/dists/unstable/Release.gpg
+    inject_evil_package
+}
+
+inject_evil_package()
+{
+    cat > $APTARCHIVE/dists/unstable/main/binary-i386/Packages <<EOF
+Package: evil
+Installed-Size: 29
+Maintainer: Joe Sixpack <joe@example.org>
+Architecture: all
+Version: 1.0
+Filename: pool/evil_1.0_all.deb
+Size: 1270
+Description: an autogenerated evil package
+EOF
+    # avoid ims hit
+    touch -d '+1hour' aptarchive/dists/unstable/main/binary-i386/Packages
+}
+
+assert_update_is_refused_and_last_good_state_used()
+{
+    testequal "E: The repository 'file: unstable Release.gpg' is no longer signed." aptget update -qq
+
+    assert_repo_is_intact
+}
+
+assert_repo_is_intact()
+{
+    testequal "foo/unstable 2.0 all" apt list -q
+    testsuccess "" aptget install -y -s foo
+    testfailure "" aptget install -y evil
+
+    LISTDIR=rootdir/var/lib/apt/lists
+    if ! ( ls $LISTDIR/*InRelease >/dev/null 2>&1 || 
+            ls $LISTDIR/*Release.gpg >/dev/null 2>&1 ); then
+        echo "Can not find InRelease/Release.gpg in $(ls $LISTDIR)"
+        msgfail
+    fi
+}
+
+setupaptarchive_with_lists_clean()
+{
+    setupaptarchive --no-update
+    rm -f rootdir/var/lib/apt/lists/_*
+    #rm -rf rootdir/var/lib/apt/lists
+}
+
+test_from_inrelease_to_unsigned()
+{
+    # setup archive with InRelease file
+    setupaptarchive_with_lists_clean
+    testsuccess aptget update
+
+    simulate_mitm_and_inject_evil_package
+    assert_update_is_refused_and_last_good_state_used
+}
+
+test_from_release_gpg_to_unsigned()
+{
+    # setup archive with Release/Release.gpg (but no InRelease)
+    setupaptarchive_with_lists_clean
+    rm $APTARCHIVE/dists/unstable/InRelease
+    testsuccess aptget update
+
+    simulate_mitm_and_inject_evil_package
+    assert_update_is_refused_and_last_good_state_used
+}
+
+test_from_inrelease_to_unsigned_with_override()
+{
+    # setup archive with InRelease file
+    setupaptarchive_with_lists_clean
+    testsuccess aptget update
+
+    # simulate moving to a unsigned but otherwise valid repo
+    simulate_mitm_and_inject_evil_package
+    generatereleasefiles
+
+    # and ensure we can update to it (with enough force) 
+    testsuccess aptget update --allow-insecure-repositories \
+        -o Acquire::AllowDowngradeToInsecureRepositories=1
+    # but that the individual packages are still considered untrusted
+    testequal "WARNING: The following packages cannot be authenticated!
+  evil
+E: There are problems and -y was used without --force-yes" aptget install -qq -y evil
+}
+
+test_cve_2012_0214()
+{
+    # see https://bugs.launchpad.net/ubuntu/+source/apt/+bug/947108
+    #
+    # it was possible to MITM the download so that InRelease/Release.gpg
+    # are not delivered (404) and a altered Release file was send
+    #
+    # apt left the old InRelease file in /var/lib/apt/lists and downloaded
+    # the unauthenticated Release file too giving the false impression that
+    # Release was authenticated
+    #
+    # Note that this is pretty much impossible nowdays because:
+    # a) InRelease is left as is, not split to InRelease/Release as it was 
+    #    in the old days
+    # b) we refuse to go from signed->unsigned
+    #
+    # Still worth having a regression test the simulates the condition
+
+    # setup archive with InRelease
+    setupaptarchive_with_lists_clean
+    testsuccess aptget update
+
+    # do what CVE-2012-0214 did
+    rm $APTARCHIVE/dists/unstable/InRelease
+    rm $APTARCHIVE/dists/unstable/Release.gpg
+    inject_evil_package
+    # build valid Release file
+    aptftparchive -qq release ./aptarchive > aptarchive/dists/unstable/Release 
+
+    assert_update_is_refused_and_last_good_state_used
+
+    # ensure there is no _Release file downloaded
+    testfailure ls rootdir/var/lib/apt/lists/*_Release
+}
+
+test_subvert_inrelease()
+{
+    # setup archive with InRelease
+    setupaptarchive_with_lists_clean
+    testsuccess aptget update
+
+    # replace InRelease with something else
+    mv $APTARCHIVE/dists/unstable/Release $APTARCHIVE/dists/unstable/InRelease
+
+    testequal "W: Failed to fetch file:${APTARCHIVE}/dists/unstable/InRelease  Does not start with a cleartext signature
+
+E: Some index files failed to download. They have been ignored, or old ones used instead." aptget update -qq
+
+    # ensure we keep the repo
+    assert_repo_is_intact
+}
+
+test_inrelease_to_invalid_inrelease()
+{
+    # setup archive with InRelease
+    setupaptarchive_with_lists_clean
+    testsuccess aptget update
+
+    # now remove InRelease and subvert Release do no longer verify
+    sed -i 's/Codename.*/Codename: evil!'/ $APTARCHIVE/dists/unstable/InRelease
+    inject_evil_package
+
+    testequal "W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: file: unstable InRelease: The following signatures were invalid: BADSIG 5A90D141DBAC8DAE Joe Sixpack (APT Testcases Dummy) <joe@example.org>
+
+W: Failed to fetch file:${APTARCHIVE}/dists/unstable/InRelease  The following signatures were invalid: BADSIG 5A90D141DBAC8DAE Joe Sixpack (APT Testcases Dummy) <joe@example.org>
+
+W: Some index files failed to download. They have been ignored, or old ones used instead." aptget update -qq
+
+    # ensure we keep the repo
+    assert_repo_is_intact
+    testfailure grep "evil" rootdir/var/lib/apt/lists/*InRelease
+}
+
+test_release_gpg_to_invalid_release_release_gpg()
+{
+    # setup archive with InRelease
+    setupaptarchive_with_lists_clean
+    rm $APTARCHIVE/dists/unstable/InRelease
+    testsuccess aptget update
+
+    # now subvert Release do no longer verify
+    echo "Some evil data" >>  $APTARCHIVE/dists/unstable/Release
+    inject_evil_package
+
+    testequal "W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: file: unstable Release.gpg: The following signatures were invalid: BADSIG 5A90D141DBAC8DAE Joe Sixpack (APT Testcases Dummy) <joe@example.org>
+
+W: Failed to fetch file:${APTARCHIVE}/dists/unstable/Release.gpg  
+
+W: Some index files failed to download. They have been ignored, or old ones used instead." aptget update -qq
+
+    assert_repo_is_intact
+    testfailure grep "evil" rootdir/var/lib/apt/lists/*Release
+}
+
+
+TESTDIR=$(readlink -f $(dirname $0))
+. $TESTDIR/framework
+
+setupenvironment
+configarchitecture "i386"
+
+# a "normal" package with source and binary
+buildsimplenativepackage 'foo' 'all' '2.0'
+
+# setup the archive and ensure we have a single package that installs fine
+setupaptarchive
+APTARCHIVE=$(readlink -f ./aptarchive)
+assert_repo_is_intact
+
+# test the various cases where a repo may go from signed->unsigned
+msgmsg "test_from_inrelease_to_unsigned"
+test_from_inrelease_to_unsigned
+
+msgmsg "test_from_release_gpg_to_unsigned"
+test_from_release_gpg_to_unsigned
+
+# ensure we do not regress on CVE-2012-0214
+msgmsg "test_cve_2012_0214"
+test_cve_2012_0214
+
+# ensure InRelase can not be subverted
+msgmsg "test_subvert_inrelease"
+test_subvert_inrelease
+
+# ensure we revert to last good state if InRelease does not verify
+msgmsg "test_inrelease_to_invalid_inrelease"
+test_inrelease_to_invalid_inrelease
+
+# ensure we revert to last good state if Release/Release.gpg does not verify
+msgmsg "test_release_gpg_to_invalid_release_release_gpg"
+test_release_gpg_to_invalid_release_release_gpg
+
+# ensure we can ovveride the downgrade error
+msgmsg "test_from_inrelease_to_unsigned"
+test_from_inrelease_to_unsigned_with_override