Imported Upstream version 2.12.4

diff --git a/Documentation/RelNotes/2.10.4.txt b/Documentation/RelNotes/2.10.4.txt
new file mode 100644 (file)
index 0000000..ee8142a
--- /dev/null
+++ b/Documentation/RelNotes/2.10.4.txt
@@ -0,0 +1,4 @@
+Git v2.10.4 Release Notes
+=========================
+
+This release forward-ports the fix for "ssh://..." URL from Git v2.7.6

diff --git a/Documentation/RelNotes/2.11.3.txt b/Documentation/RelNotes/2.11.3.txt
new file mode 100644 (file)
index 0000000..4e3b78d
--- /dev/null
+++ b/Documentation/RelNotes/2.11.3.txt
@@ -0,0 +1,4 @@
+Git v2.11.3 Release Notes
+=========================
+
+This release forward-ports the fix for "ssh://..." URL from Git v2.7.6

diff --git a/Documentation/RelNotes/2.12.4.txt b/Documentation/RelNotes/2.12.4.txt
new file mode 100644 (file)
index 0000000..3f56938
--- /dev/null
+++ b/Documentation/RelNotes/2.12.4.txt
@@ -0,0 +1,4 @@
+Git v2.12.4 Release Notes
+=========================
+
+This release forward-ports the fix for "ssh://..." URL from Git v2.7.6

diff --git a/Documentation/RelNotes/2.7.6.txt b/Documentation/RelNotes/2.7.6.txt
new file mode 100644 (file)
index 0000000..4c6d1dc
--- /dev/null
+++ b/Documentation/RelNotes/2.7.6.txt
@@ -0,0 +1,25 @@
+Git v2.7.6 Release Notes
+========================
+
+Fixes since v2.7.5
+------------------
+
+ * A "ssh://..." URL can result in a "ssh" command line with a
+   hostname that begins with a dash "-", which would cause the "ssh"
+   command to instead (mis)treat it as an option.  This is now
+   prevented by forbidding such a hostname (which will not be
+   necessary in the real world).
+
+ * Similarly, when GIT_PROXY_COMMAND is configured, the command is
+   run with host and port that are parsed out from "ssh://..." URL;
+   a poorly written GIT_PROXY_COMMAND could be tricked into treating
+   a string that begins with a dash "-".  This is now prevented by
+   forbidding such a hostname and port number (again, which will not
+   be necessary in the real world).
+
+ * In the same spirit, a repository name that begins with a dash "-"
+   is also forbidden now.
+
+Credits go to Brian Neel at GitLab, Joern Schneeweisz of Recurity
+Labs and Jeff King at GitHub.
+

diff --git a/Documentation/RelNotes/2.8.6.txt b/Documentation/RelNotes/2.8.6.txt
new file mode 100644 (file)
index 0000000..d8db55d
--- /dev/null
+++ b/Documentation/RelNotes/2.8.6.txt
@@ -0,0 +1,4 @@
+Git v2.8.6 Release Notes
+========================
+
+This release forward-ports the fix for "ssh://..." URL from Git v2.7.6

diff --git a/Documentation/RelNotes/2.9.5.txt b/Documentation/RelNotes/2.9.5.txt
new file mode 100644 (file)
index 0000000..668313a
--- /dev/null
+++ b/Documentation/RelNotes/2.9.5.txt
@@ -0,0 +1,4 @@
+Git v2.9.5 Release Notes
+========================
+
+This release forward-ports the fix for "ssh://..." URL from Git v2.7.6

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 6cf4ab6..b0e458e 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.12.3
+DEF_VER=v2.12.4
 
 LF='
 '

diff --git a/RelNotes b/RelNotes
index a04927d..478bd29 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes/2.12.3.txt
\ No newline at end of file
+Documentation/RelNotes/2.12.4.txt
\ No newline at end of file

diff --git a/cache.h b/cache.h
index 900796c..1c4686a 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -1118,6 +1118,14 @@ char *strip_path_suffix(const char *path, const char *suffix);
 int daemon_avoid_alias(const char *path);
 extern int is_ntfs_dotgit(const char *name);
 
+/*
+ * Returns true iff "str" could be confused as a command-line option when
+ * passed to a sub-program like "ssh". Note that this has nothing to do with
+ * shell-quoting, which should be handled separately; we're assuming here that
+ * the string makes it verbatim to the sub-program.
+ */
+int looks_like_command_line_option(const char *str);
+
 /**
  * Return a newly allocated string with the evaluation of
  * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise

diff --git a/connect.c b/connect.c
index 8cb93b0..ea316c4 100644 (file)
--- a/connect.c
+++ b/connect.c
@@ -577,6 +577,11 @@ static struct child_process *git_proxy_connect(int fd[2], char *host)
 
        get_host_and_port(&host, &port);
 
+       if (looks_like_command_line_option(host))
+               die("strange hostname '%s' blocked", host);
+       if (looks_like_command_line_option(port))
+               die("strange port '%s' blocked", port);
+
        proxy = xmalloc(sizeof(*proxy));
        child_process_init(proxy);
        argv_array_push(&proxy->args, git_proxy_command);
@@ -759,6 +764,9 @@ struct child_process *git_connect(int fd[2], const char *url,
                conn = xmalloc(sizeof(*conn));
                child_process_init(conn);
 
+               if (looks_like_command_line_option(path))
+                       die("strange pathname '%s' blocked", path);
+
                strbuf_addstr(&cmd, prog);
                strbuf_addch(&cmd, ' ');
                sq_quote_buf(&cmd, path);
@@ -791,6 +799,9 @@ struct child_process *git_connect(int fd[2], const char *url,
                                return NULL;
                        }
 
+                       if (looks_like_command_line_option(ssh_host))
+                               die("strange hostname '%s' blocked", ssh_host);
+
                        ssh = get_ssh_command();
                        if (!ssh) {
                                const char *base;

diff --git a/path.c b/path.c
index efcedaf..897b341 100644 (file)
--- a/path.c
+++ b/path.c
@@ -1257,6 +1257,11 @@ int is_ntfs_dotgit(const char *name)
                }
 }
 
+int looks_like_command_line_option(const char *str)
+{
+       return str && str[0] == '-';
+}
+
 char *xdg_config_home(const char *filename)
 {
        const char *home, *config_home;

diff --git a/t/lib-proto-disable.sh b/t/lib-proto-disable.sh
index 02f49cb..83babe5 100644 (file)
--- a/t/lib-proto-disable.sh
+++ b/t/lib-proto-disable.sh
@@ -147,29 +147,33 @@ test_config () {
        # Test clone/fetch/push with protocol.allow user defined default
        test_expect_success "clone $desc (enabled)" '
                rm -rf tmp.git &&
-               git config --global protocol.allow always &&
+               test_config_global protocol.allow always &&
                git clone --bare "$url" tmp.git
        '
 
        test_expect_success "fetch $desc (enabled)" '
+               test_config_global protocol.allow always &&
                git -C tmp.git fetch
        '
 
        test_expect_success "push $desc (enabled)" '
+               test_config_global protocol.allow always &&
                git -C tmp.git push origin HEAD:pushed
        '
 
        test_expect_success "push $desc (disabled)" '
-               git config --global protocol.allow never &&
+               test_config_global protocol.allow never &&
                test_must_fail git -C tmp.git push origin HEAD:pushed
        '
 
        test_expect_success "fetch $desc (disabled)" '
+               test_config_global protocol.allow never &&
                test_must_fail git -C tmp.git fetch
        '
 
        test_expect_success "clone $desc (disabled)" '
                rm -rf tmp.git &&
+               test_config_global protocol.allow never &&
                test_must_fail git clone --bare "$url" tmp.git
        '
 }

diff --git a/t/t5532-fetch-proxy.sh b/t/t5532-fetch-proxy.sh
index 51c9669..9c27986 100755 (executable)
--- a/t/t5532-fetch-proxy.sh
+++ b/t/t5532-fetch-proxy.sh
@@ -43,4 +43,9 @@ test_expect_success 'fetch through proxy works' '
        test_cmp expect actual
 '
 
+test_expect_success 'funny hostnames are rejected before running proxy' '
+       test_must_fail git fetch git://-remote/repo.git 2>stderr &&
+       ! grep "proxying for" stderr
+'
+
 test_done

diff --git a/t/t5810-proto-disable-local.sh b/t/t5810-proto-disable-local.sh
index 563592d..c1ef99b 100755 (executable)
--- a/t/t5810-proto-disable-local.sh
+++ b/t/t5810-proto-disable-local.sh
@@ -11,4 +11,27 @@ test_expect_success 'setup repository to clone' '
 test_proto "file://" file "file://$PWD"
 test_proto "path" file .
 
+test_expect_success 'setup repo with dash' '
+       git init --bare repo.git &&
+       git push repo.git HEAD &&
+       mv repo.git "$PWD/-repo.git"
+'
+
+# This will fail even without our rejection because upload-pack will
+# complain about the bogus option. So let's make sure that GIT_TRACE
+# doesn't show us even running upload-pack.
+#
+# We must also be sure to use "fetch" and not "clone" here, as the latter
+# actually canonicalizes our input into an absolute path (which is fine
+# to allow).
+test_expect_success 'repo names starting with dash are rejected' '
+       rm -f trace.out &&
+       test_must_fail env GIT_TRACE="$PWD/trace.out" git fetch -- -repo.git &&
+       ! grep upload-pack trace.out
+'
+
+test_expect_success 'full paths still work' '
+       git fetch "$PWD/-repo.git"
+'
+
 test_done

diff --git a/t/t5813-proto-disable-ssh.sh b/t/t5813-proto-disable-ssh.sh
index a954ead..3f084ee 100755 (executable)
--- a/t/t5813-proto-disable-ssh.sh
+++ b/t/t5813-proto-disable-ssh.sh
@@ -17,4 +17,27 @@ test_proto "host:path" ssh "remote:repo.git"
 test_proto "ssh://" ssh "ssh://remote$PWD/remote/repo.git"
 test_proto "git+ssh://" ssh "git+ssh://remote$PWD/remote/repo.git"
 
+# Don't even bother setting up a "-remote" directory, as ssh would generally
+# complain about the bogus option rather than completing our request. Our
+# fake wrapper actually _can_ handle this case, but it's more robust to
+# simply confirm from its output that it did not run at all.
+test_expect_success 'hostnames starting with dash are rejected' '
+       test_must_fail git clone ssh://-remote/repo.git dash-host 2>stderr &&
+       ! grep ^ssh: stderr
+'
+
+test_expect_success 'setup repo with dash' '
+       git init --bare remote/-repo.git &&
+       git push remote/-repo.git HEAD
+'
+
+test_expect_success 'repo names starting with dash are rejected' '
+       test_must_fail git clone remote:-repo.git dash-path 2>stderr &&
+       ! grep ^ssh: stderr
+'
+
+test_expect_success 'full paths still work' '
+       git clone "remote:$PWD/remote/-repo.git" dash-path
+'
+
 test_done