Revision 820d7650cc670d3e4195aad3a5343158c316e8fa authored by Junio C Hamano on 26 July 2017, 17:24:20 UTC, committed by Junio C Hamano on 28 July 2017, 22:51:14 UTC
When commands like "git fetch" talk with ssh://$rest_of_URL/, the
code splits $rest_of_URL into components like host, port, etc., and
then spawns the underlying "ssh" program by formulating argv[] array
that has:
- the path to ssh command taken from GIT_SSH_COMMAND, etc.
- dashed options like '-batch' (for Tortoise), '-p <port>' as
needed.
- ssh_host, which is supposed to be the hostname parsed out of
$rest_of_URL.
- then the command to be run on the other side, e.g. git
upload-pack.
If the ssh_host ends up getting '-<anything>', the argv[] that is
used to spawn the command becomes something like:
{ "ssh", "-p", "22", "-<anything>", "command", "to", "run", NULL }
which obviously is bogus, but depending on the actual value of
"<anything>", will make "ssh" parse and use it as an option.
Prevent this by forbidding ssh_host that begins with a "-".
Noticed-by: Joern Schneeweisz of Recurity Labs
Reported-by: Brian at GitLab
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent c8dd1e3
t6015-rev-list-show-all-parents.sh
#!/bin/sh
test_description='--show-all --parents does not rewrite TREESAME commits'
. ./test-lib.sh
test_expect_success 'set up --show-all --parents test' '
test_commit one foo.txt &&
commit1=`git rev-list -1 HEAD` &&
test_commit two bar.txt &&
commit2=`git rev-list -1 HEAD` &&
test_commit three foo.txt &&
commit3=`git rev-list -1 HEAD`
'
test_expect_success '--parents rewrites TREESAME parents correctly' '
echo $commit3 $commit1 > expected &&
echo $commit1 >> expected &&
git rev-list --parents HEAD -- foo.txt > actual &&
test_cmp expected actual
'
test_expect_success '--parents --show-all does not rewrites TREESAME parents' '
echo $commit3 $commit2 > expected &&
echo $commit2 $commit1 >> expected &&
echo $commit1 >> expected &&
git rev-list --parents --show-all HEAD -- foo.txt > actual &&
test_cmp expected actual
'
test_done
Computing file changes ...
