diff options
Diffstat (limited to 'gnu/packages/patches/bazaar-CVE-2017-14176.patch')
| -rw-r--r-- | gnu/packages/patches/bazaar-CVE-2017-14176.patch | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/gnu/packages/patches/bazaar-CVE-2017-14176.patch b/gnu/packages/patches/bazaar-CVE-2017-14176.patch new file mode 100644 index 0000000000..0e9083b97d --- /dev/null +++ b/gnu/packages/patches/bazaar-CVE-2017-14176.patch @@ -0,0 +1,166 @@ +Fix CVE-2017-14176: + +https://bugs.launchpad.net/bzr/+bug/1710979 +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14176 + +Patch copied from Debian's Bazaar package version bzr_2.7.0+bzr6619-7+deb9u1: + +https://alioth.debian.org/scm/loggerhead/pkg-bazaar/bzr/2.7/revision/4204 + +Description: Prevent SSH command line options from being specified in bzr+ssh:// URLs +Bug: https://bugs.launchpad.net/brz/+bug/1710979 +Bug-Debian: https://bugs.debian.org/874429 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-14176 +Forwarded: no +Author: Jelmer Vernooij <jelmer@jelmer.uk> +Last-Update: 2017-11-26 + +=== modified file 'bzrlib/tests/test_ssh_transport.py' +--- old/bzrlib/tests/test_ssh_transport.py 2010-10-07 12:45:51 +0000 ++++ new/bzrlib/tests/test_ssh_transport.py 2017-08-20 01:59:20 +0000 +@@ -22,6 +22,7 @@ + SSHCorpSubprocessVendor, + LSHSubprocessVendor, + SSHVendorManager, ++ StrangeHostname, + ) + + +@@ -161,6 +162,19 @@ + + class SubprocessVendorsTests(TestCase): + ++ def test_openssh_command_tricked(self): ++ vendor = OpenSSHSubprocessVendor() ++ self.assertEqual( ++ vendor._get_vendor_specific_argv( ++ "user", "-oProxyCommand=blah", 100, command=["bzr"]), ++ ["ssh", "-oForwardX11=no", "-oForwardAgent=no", ++ "-oClearAllForwardings=yes", ++ "-oNoHostAuthenticationForLocalhost=yes", ++ "-p", "100", ++ "-l", "user", ++ "--", ++ "-oProxyCommand=blah", "bzr"]) ++ + def test_openssh_command_arguments(self): + vendor = OpenSSHSubprocessVendor() + self.assertEqual( +@@ -171,6 +185,7 @@ + "-oNoHostAuthenticationForLocalhost=yes", + "-p", "100", + "-l", "user", ++ "--", + "host", "bzr"] + ) + +@@ -184,9 +199,16 @@ + "-oNoHostAuthenticationForLocalhost=yes", + "-p", "100", + "-l", "user", +- "-s", "host", "sftp"] ++ "-s", "--", "host", "sftp"] + ) + ++ def test_openssh_command_tricked(self): ++ vendor = SSHCorpSubprocessVendor() ++ self.assertRaises( ++ StrangeHostname, ++ vendor._get_vendor_specific_argv, ++ "user", "-oProxyCommand=host", 100, command=["bzr"]) ++ + def test_sshcorp_command_arguments(self): + vendor = SSHCorpSubprocessVendor() + self.assertEqual( +@@ -209,6 +231,13 @@ + "-s", "sftp", "host"] + ) + ++ def test_lsh_command_tricked(self): ++ vendor = LSHSubprocessVendor() ++ self.assertRaises( ++ StrangeHostname, ++ vendor._get_vendor_specific_argv, ++ "user", "-oProxyCommand=host", 100, command=["bzr"]) ++ + def test_lsh_command_arguments(self): + vendor = LSHSubprocessVendor() + self.assertEqual( +@@ -231,6 +260,13 @@ + "--subsystem", "sftp", "host"] + ) + ++ def test_plink_command_tricked(self): ++ vendor = PLinkSubprocessVendor() ++ self.assertRaises( ++ StrangeHostname, ++ vendor._get_vendor_specific_argv, ++ "user", "-oProxyCommand=host", 100, command=["bzr"]) ++ + def test_plink_command_arguments(self): + vendor = PLinkSubprocessVendor() + self.assertEqual( + +=== modified file 'bzrlib/transport/ssh.py' +--- old/bzrlib/transport/ssh.py 2015-07-31 01:04:41 +0000 ++++ new/bzrlib/transport/ssh.py 2017-08-20 01:59:20 +0000 +@@ -46,6 +46,10 @@ + from paramiko.sftp_client import SFTPClient + + ++class StrangeHostname(errors.BzrError): ++ _fmt = "Refusing to connect to strange SSH hostname %(hostname)s" ++ ++ + SYSTEM_HOSTKEYS = {} + BZR_HOSTKEYS = {} + +@@ -360,6 +364,11 @@ + # tests, but beware of using PIPE which may hang due to not being read. + _stderr_target = None + ++ @staticmethod ++ def _check_hostname(arg): ++ if arg.startswith('-'): ++ raise StrangeHostname(hostname=arg) ++ + def _connect(self, argv): + # Attempt to make a socketpair to use as stdin/stdout for the SSH + # subprocess. We prefer sockets to pipes because they support +@@ -424,9 +433,9 @@ + if username is not None: + args.extend(['-l', username]) + if subsystem is not None: +- args.extend(['-s', host, subsystem]) ++ args.extend(['-s', '--', host, subsystem]) + else: +- args.extend([host] + command) ++ args.extend(['--', host] + command) + return args + + register_ssh_vendor('openssh', OpenSSHSubprocessVendor()) +@@ -439,6 +448,7 @@ + + def _get_vendor_specific_argv(self, username, host, port, subsystem=None, + command=None): ++ self._check_hostname(host) + args = [self.executable_path, '-x'] + if port is not None: + args.extend(['-p', str(port)]) +@@ -460,6 +470,7 @@ + + def _get_vendor_specific_argv(self, username, host, port, subsystem=None, + command=None): ++ self._check_hostname(host) + args = [self.executable_path] + if port is not None: + args.extend(['-p', str(port)]) +@@ -481,6 +492,7 @@ + + def _get_vendor_specific_argv(self, username, host, port, subsystem=None, + command=None): ++ self._check_hostname(host) + args = [self.executable_path, '-x', '-a', '-ssh', '-2', '-batch'] + if port is not None: + args.extend(['-P', str(port)]) + |