DSA 1905-1: New python-django packages fix denial of service

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Debian Security Advisory DSA-1905-1 security@debian.org
http://www.debian.org/security/ Nico Golde
October 10th, 2009 http://www.debian.org/security/faq
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Package : python-django
Vulnerability : insufficient input validation
Problem type : remote
Debian-specific: no
Debian bug : #550457
CVE ID : None yet

The forms library of python-django, a high-level Python web development
framework, is using a badly chosen regular expression when validating
email addresses and URLs. An attacker can use this to perform denial
of service attacks (100% CPU consumption) due to bad backtracking
via a specially crafted email address or URL which is validated by the
django forms library.


python-django in the oldstable distribution (etch), is not affected by
this problem.

For the stable distribution (lenny), this problem has been fixed in
version 1.0.2-1+lenny2.

For the testing distribution (squeeze), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in
version 1.1.1-1.


We recommend that you upgrade your python-django packages.

Upgrade instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 5.0 alias lenny
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Debian (stable)
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Stable updates are available for alpha, amd64, arm, armel, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

Source archives:

http://security.debian.org/pool/updates/main/p/python-django/python-django_1.0.2-1+lenny2.dsc
Size/MD5 checksum: 1606 7d335038ed1c10264a8ae9089574397c
http://security.debian.org/pool/updates/main/p/python-django/python-django_1.0.2.orig.tar.gz
Size/MD5 checksum: 4649433 89353e3749668778f1370d2e444f3adc
http://security.debian.org/pool/updates/main/p/python-django/python-django_1.0.2-1+lenny2.diff.gz
Size/MD5 checksum: 15789 586cdeaa9d99dc74240a16d1c40803fb

Architecture independent packages:

http://security.debian.org/pool/updates/main/p/python-django/python-django_1.0.2-1+lenny2_all.deb
Size/MD5 checksum: 4706950 f01133963dbac73a87e9a209f85cb38d


These files will probably be moved into the stable distribution on
its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show lt;pkggt;' and http://packages.debian.org/lt;pkggt;
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