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text/prs.fallenstein.rst
changeset: fix XSS vulnerability in parent-child navigation
The 'Parent Rev.' - 'Child Rev.' links on changesets and in the file browser
normally immediately jump to the correct revision upon click. But, if there
are multiple candidates, e.g. two children of a commit, then a list of
revisions is shown as hyperlinks instead.
These hyperlinks have a 'title' attribute containing the full commit message
of the corresponding commit. When this commit message contains characters
special to HTML, like ", >, etc. they were added literally to the HTML code.
This can lead to a cross-site scripting (XSS) vulnerability when an attacker
has write access to a repository. They could craft a special commit message
that would introduce HTML and/or JavaScript code when the commit is listed
in such 'parent-child' navigation links.
Escape the commit message before using it further.
The 'Parent Rev.' - 'Child Rev.' links on changesets and in the file browser
normally immediately jump to the correct revision upon click. But, if there
are multiple candidates, e.g. two children of a commit, then a list of
revisions is shown as hyperlinks instead.
These hyperlinks have a 'title' attribute containing the full commit message
of the corresponding commit. When this commit message contains characters
special to HTML, like ", >, etc. they were added literally to the HTML code.
This can lead to a cross-site scripting (XSS) vulnerability when an attacker
has write access to a repository. They could craft a special commit message
that would introduce HTML and/or JavaScript code when the commit is listed
in such 'parent-child' navigation links.
Escape the commit message before using it further.
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===============
Troubleshooting
===============
:Q: **Missing static files?**
:A: Make sure either to set the ``static_files = true`` in the .ini file or
double check the root path for your http setup. It should point to
for example:
``/home/my-virtual-python/lib/python2.7/site-packages/kallithea/public``
|
:Q: **Can't install celery/rabbitmq?**
:A: Don't worry. Kallithea works without them, too. No extra setup is required.
Try out the great Celery docs for further help.
|
:Q: **Long lasting push timeouts?**
:A: Make sure you set a longer timeout in your proxy/fcgi settings. Timeouts
are caused by the http server and not Kallithea.
|
:Q: **Large pushes timeouts?**
:A: Make sure you set a proper ``max_body_size`` for the http server. Very often
Apache, Nginx, or other http servers kill the connection due to to large
body.
|
:Q: **Apache doesn't pass basicAuth on pull/push?**
:A: Make sure you added ``WSGIPassAuthorization true``.
|
:Q: **Git fails on push/pull?**
:A: Make sure you're using a WSGI http server that can handle chunked encoding
such as ``waitress`` or ``gunicorn``.
|
:Q: **How can I use hooks in Kallithea?**
:A: It's easy if they are Python hooks: just use advanced link in
hooks section in Admin panel, that works only for Mercurial. If
you want to use Git hooks, just install th proper one in the repository,
e.g., create a file `/gitrepo/hooks/pre-receive`. You can also use
Kallithea-extensions to connect to callback hooks, for both Git
and Mercurial.
|
:Q: **Kallithea is slow for me, how can I make it faster?**
:A: See the :ref:`performance` section.
|
:Q: **UnicodeDecodeError on Apache mod_wsgi**
:A: Please read: https://docs.djangoproject.com/en/dev/howto/deployment/wsgi/modwsgi/#if-you-get-a-unicodeencodeerror.
|
:Q: **Requests hanging on Windows**
:A: Please try out with disabled Antivirus software, there are some known problems with Eset Antivirus. Make sure
you have installed the latest Windows patches (especially KB2789397).
.. _virtualenv: http://pypi.python.org/pypi/virtualenv
.. _python: http://www.python.org/
.. _mercurial: https://www.mercurial-scm.org/
.. _celery: http://celeryproject.org/
.. _rabbitmq: http://www.rabbitmq.com/
.. _python-ldap: http://www.python-ldap.org/
|