From 3a341a1deda6123f219765d0cd4a51fd826e213e Mon Sep 17 00:00:00 2001 From: Michael Vogt Date: Tue, 8 Apr 2008 14:19:20 +0200 Subject: cmdline/apt-key: only use verify_against_master_keyring in net-update, not in update. it does not add any security in update (see comment in the source for rational) --- cmdline/apt-key | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/cmdline/apt-key b/cmdline/apt-key index 6dd9fd8aa..bf1a5fefb 100755 --- a/cmdline/apt-key +++ b/cmdline/apt-key @@ -32,9 +32,8 @@ add_keys_with_verify_against_master_keyring() { # when adding new keys, make sure that the archive-master-keyring # is honored. so: - # all keys that are exported and have the name - # "Ubuntu Archive Automatic Signing Key" must have a valid signature - # from a key in the ubuntu-master-keyring + # all keys that are exported must have a valid signature + # from a key in the $distro-master-keyring add_keys=`$GPG_CMD --keyring $ADD_KEYRING --with-colons --list-keys | grep ^pub | cut -d: -f5` master_keys=`$GPG_CMD --keyring $MASTER --with-colons --list-keys | grep ^pub | cut -d: -f5` for add_key in $add_keys; do @@ -84,13 +83,14 @@ update() { exit 1 fi - # add new keys, if no MASTER_KEYRING is used, use the traditional - # way - if [ -z "$MASTER_KEYRING" ]; then - $GPG_CMD --quiet --batch --keyring $ARCHIVE_KEYRING --export | $GPG --import - else - add_keys_with_verify_against_master_keyring $ARCHIVE_KEYRING $MASTER_KEYRING - fi + # add new keys from the package; + + # we do not use add_keys_with_verify_against_master_keyring here, + # because we "update" is run on regular package updates. A + # attacker might as well replace the master-archive-keyring file + # in the package and add his own keys. so this check wouldn't + # add any security. we *need* this check on net-update though + $GPG_CMD --quiet --batch --keyring $ARCHIVE_KEYRING --export | $GPG --import # remove no-longer supported/used keys keys=`$GPG_CMD --keyring $REMOVED_KEYS --with-colons --list-keys | grep ^pub | cut -d: -f5` -- cgit v1.2.3