[Pkg-privacy-maintainers] Bug#893308: (Re)install leads to AttributeError: 'module' object has no attribute 'OP_SINGLE_ECDH_USE'

[Georg Faerber]

Package: torbrowser-launcher
Version: 0.2.9-1
Severity: important

Hi all,

Launching torbrowser-launcher via 
$ torbrowser-launcher --settings
and clicking (Re)install Tor Browser leads to:

[...]
Downloading and installing Tor Browser for the first time.
Downloading https://aus1.torproject.org/torbrowser/update_3/release/Linux_x86_64-gcc3/x/en-US
Traceback (most recent call last):
  File "/usr/bin/torbrowser-launcher", line 30, in <module>
    torbrowser_launcher.main()
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/__init__.py", line 64, in main
    app = Launcher(common, url_list)
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/launcher.py", line 132, in __init__
    self.build_ui()
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/launcher.py", line 253, in build_ui
    self.start(None)
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/launcher.py", line 262, in start
    self.run_task()
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/launcher.py", line 279, in run_task
    self.download('version check', self.common.paths['version_check_url'], self.common.paths['version_check_file'])
  File "/usr/lib/python2.7/dist-packages/torbrowser_launcher/launcher.py", line 477, in download
    None)
  File "/usr/lib/python2.7/dist-packages/twisted/web/client.py", line 2041, in request
 %     deferred = self._agent.request(method, uri, headers, bodyProducer)                              ~ debian
  File "/usr/lib/python2.7/dist-packages/twisted/web/client.py", line 1649, in request
    endpoint = self._getEndpoint(parsedURI)
  File "/usr/lib/python2.7/dist-packages/twisted/web/client.py", line 1633, in _getEndpoint
    return self._endpointFactory.endpointForURI(uri)
  File "/usr/lib/python2.7/dist-packages/twisted/web/client.py", line 1510, in endpointForURI
    uri.port)
  File "/usr/lib/python2.7/dist-packages/twisted/web/client.py", line 944, in creatorForNetloc
    trustRoot=self._trustRoot)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/_sslverify.py", line 1287, in optionsForClientTLS
    **extraCertificateOptions
  File "/usr/lib/python2.7/dist-packages/twisted/python/deprecate.py", line 792, in wrapped
    return wrappee(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/_sslverify.py", line 1583, in __init__
    self._options |= SSL.OP_SINGLE_DH_USE | SSL.OP_SINGLE_ECDH_USE
AttributeError: 'module' object has no attribute 'OP_SINGLE_ECDH_USE'

Cheers,
Georg

-- System Information:
Debian Release: 8.10
  APT prefers oldstable
  APT policy: (900, 'oldstable'), (500, 'oldstable-updates'), (500, 'unstable'), (500, 'testing'), (100, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages torbrowser-launcher depends on:
ii  ca-certificates   20170717
ii  gnupg             2.2.5-1
ii  libdbus-glib-1-2  0.102-1
ii  python-gtk2       2.24.0-5.1+b1
ii  python-lzma       0.5.3-3
ii  python-parsley    1.2-1
ii  python-psutil     5.4.2-1
ii  python-twisted    17.9.0-1
ii  python-txsocksx   1.15.0.2-1
pn  python:any        <none>

Versions of packages torbrowser-launcher recommends:
ii  tor  0.3.2.10-1

Versions of packages torbrowser-launcher suggests:
ii  apparmor       2.12-3
pn  python-pygame  <none>

- no debconf information