dulwich - security update

Multiple vulnerabilities have been discovered in Dulwich, a Python
implementation of the file formats and protocols used by the Git version
control system. The Common Vulnerabilities and Exposures project
identifies the following problems:

• CVE-2014-9706
  It was discovered that Dulwich allows writing to files under .git/
  when checking out working trees. This could lead to the execution of
  arbitrary code with the privileges of the user running an
  application based on Dulwich.
• CVE-2015-0838
  Ivan Fratric of the Google Security Team has found a buffer
  overflow in the C implementation of the apply_delta() function,
  used when accessing Git objects in pack files. An attacker could
  take advantage of this flaw to cause the execution of arbitrary
  code with the privileges of the user running a Git server or client
  based on Dulwich.

For the stable distribution (wheezy), these problems have been fixed in
version 0.8.5-2+deb7u2.

For the upcoming stable distribution (jessie), these problems have been
fixed in version 0.9.7-3.

For the unstable distribution (sid), these problems have been fixed in
version 0.10.1-1.

We recommend that you upgrade your dulwich packages.