-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Package : python-django Version : 1.7.11-1+deb8u7 CVE IDs : CVE-2019-14232 CVE-2019-14233 Debian Bug : #934026
It was discovered that there were two vulnerabilities in the Django web development framework: * CVE-2019-14232: Prevent a possible denial-of-service in django.utils.text.Truncator. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable. The regular expressions used by Truncator have been simplified in order to avoid potential backtracking issues. As a consequence, trailing punctuation may now at times be included in the truncated output. * CVE-2019-14233: Prevent a possible denial-of-service in strip_tags(). Due to the behavior of the underlying HTMLParser, django.utils.html.strip_tags() would be extremely slow to evaluate certain inputs containing large sequences of nested incomplete HTML entities. The strip_tags() method is used to implement the corresponding striptags template filter, which was thus also vulnerable. strip_tags() now avoids recursive calls to HTMLParser when progress removing tags, but necessarily incomplete HTML entities, stops being made. Remember that absolutely NO guarantee is provided about the results of strip_tags() being HTML safe. So NEVER mark safe the result of a strip_tags() call without escaping it first, for example with django.utils.html.escape(). For Debian 8 "Jessie", these has been fixed in python-django version 1.7.11-1+deb8u7. We recommend that you upgrade your python-django packages. You can find more information in upstream's announcement: https://www.djangoproject.com/weblog/2019/aug/01/security-releases/ Thanks to Carlton Gibson et al. for their handling of these issues. Regards, - -- ,''`. : :' : Chris Lamb `. `'` la...@debian.org / chris-lamb.co.uk `- -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwv5L0nHBObhsUz5GHpU+J9QxHlgFAl1JTwwACgkQHpU+J9Qx HlhaaBAArc9i9Mi9GP3FMdogAsB7l/BoDTFYeZKp++xfTxey/EF6k0tm9yuxIG7e mtzpcZfFnXmRm3OG98WNRZsIUm3D/Lq4bAZYCjoMOkfuC3aAlP9xDupBPD2UI5lz OTurCJqMiL3ucgn/UwWikflpIzGP97GRqeKW01bNEx5G3v5yV6fmDg3QYt7a/dUd z6SLdxBkjqpjP2ylY04eRa8Fa1McGgqtsC3u1Rfz47OyRlB3oJgOYgBf2XwqqC7A leT1PdSdLQHwFmEHt2EuT0kEdKjiV2Ef4E6T3n+bAgEXx5blPhb0+AWycAbN9j8B n1VJoGPnXRxzFIMvKUQ8VBfQDJL1sFoTVsQ5a4Goy99C2Sdz6hv0Wlmi1Mx+Nzjb YtgRWYF9NbCbzziZZ5y+87BPKDPuIw43oeULeng/SfnQavsBMlZn0WG0+diArU/i +KAE8xBKuRKeUVMdIe2ryP2uuTDL6RxFeW/qkaEgbEvgSXXTzBPaUU3oi7iLE+w9 2exrLP5o0LZXeJHoceaexuS9iuC6XoEgleFiQfo1d4DpQjb19yrPWU9kfesyxPVw PWyU17gplkKhJv+zzUjH483BhmQI6nl+Jo1AaEeIelvZ8Js3ncvvPFjnmUQhweGt ruTk8537/dpT57uEEtg7XmCe+L82GJg+U6pxpx0ggZO0GziIEMk= =ZinI -----END PGP SIGNATURE-----