[CVE-2013-2099] ssl.match_hostname() trips over crafted wildcard names

[Andrew Starr-Bochicchio]

/bzrlib/transport/http/_urllib2_wrappers.py contains code from Python 3.2's ssl module for which there has been a security issue found.

Python Bug: http://bugs.python.org/issue17980
CVE request: http://www.openwall.com/lists/oss-security/2013/05/15/6
Probable fix: http://hg.python.org/cpython/rev/fafd33db6ff6/

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: bzr 2.6.0~bzr6571-4ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
Uname: Linux 3.8.0-21-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Mon May 20 11:36:23 2013
InstallationDate: Installed on 2013-03-16 (64 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130316)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: bzr
UpgradeStatus: No upgrade log present (probably fresh install)

[Andrew Starr-Bochicchio (andrewsomething)]

Fixed both upstream and Debian. Attached debdiff merges the fix from Debian.

(I've dropped the Ubuntu change to Vcs fields as the UDD bzr imports for both Debian and Ubuntu are out of date. So that branch isn't very helpful. Yes, I realize that is a bit ironic...)

Changes since last Ubuntu version:

 bzr (2.6.0~bzr6574-1ubuntu1) saucy; urgency=low
 .
   * Merge from Debian unstable. Remaining Ubuntu changes:
    - Drop build dependencies on python-{meliae,lzma,medusa},
      which are not in main.
   * Drop changes to Vcs fields. The UDD imports are out of date.
 .
 bzr (2.6.0~bzr6574-1) unstable; urgency=low
 .
   * New upstream snapshot.
    - Fix CVE 2013-2009. Avoid allowing multiple wildcards in a single
      SSL cert hostname segment (Closes: #709068, LP: #1182124).
 .
 bzr (2.6.0~bzr6573-1) unstable; urgency=low
 .
   * Upload to unstable.
   * New upstream snapshot.
   * Remove the test_tuned_gzip.TestToGzip.test_enormous_chunks test
     (LP: #1116079, #1160572).
   * Drop debian/patches/04_revert_ui_changes, fixed upstream.
   * Drop deprecated Dm-Upload-Allowed field.
   * Bump Standards-Version to 3.9.4, no changes needed.
   * Drop un-needed Build-Conflicts on python-gpgme.

[Marc Deslauriers (mdeslaur)]

Merge in comment #2 looks good. Thanks!
Uploaded to saucy.

[Launchpad Janitor (janitor)]

This bug was fixed in the package bzr - 2.6.0~bzr6574-1ubuntu1

---------------
bzr (2.6.0~bzr6574-1ubuntu1) saucy; urgency=low

  * Merge from Debian unstable. Remaining Ubuntu changes:
   - Drop build dependencies on python-{meliae,lzma,medusa},
     which are not in main.
  * Drop changes to Vcs fields. The UDD imports are out of date.

bzr (2.6.0~bzr6574-1) unstable; urgency=low

  * New upstream snapshot.
   - Fix CVE 2013-2009. Avoid allowing multiple wildcards in a single
     SSL cert hostname segment (Closes: #709068, LP: #1182124).

bzr (2.6.0~bzr6573-1) unstable; urgency=low

  * Upload to unstable.
  * New upstream snapshot.
  * Remove the test_tuned_gzip.TestToGzip.test_enormous_chunks test
    (LP: #1116079, #1160572).
  * Drop debian/patches/04_revert_ui_changes, fixed upstream.
  * Drop deprecated Dm-Upload-Allowed field.
  * Bump Standards-Version to 3.9.4, no changes needed.
  * Drop un-needed Build-Conflicts on python-gpgme.
 -- Andrew Starr-Bochicchio <email address hidden> Mon, 20 May 2013 20:55:13 -0400

[Toshio Kuratomi (toshio)]

Note: there's now a backports module on pypi for this function: https://pypi.python.org/pypi/backports.ssl_match_hostname/

However, it hasn't fixed this CVE upstream as fast as you have :-)