Otkrivena su i ispravljena tri propusta programskog paketa python-django koje su napadači mogli iskoristiti za napad uskraćivanjem usluga (DoS) i XSS napade.
Paket:
python-django 1.x
Operacijski sustavi:
Ubuntu Linux 10.04, Ubuntu Linux 11.04, Ubuntu Linux 11.10, Ubuntu Linux 12.04
Kritičnost:
5
Problem:
pogreška u programskoj funkciji, pogreška u programskoj komponenti, XSS
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-3442, CVE-2012-3443, CVE-2012-3444
Izvorni ID preporuke:
USN-1560-1
Izvor:
Ubuntu
Problem:
Uočene su greške u programskoj komponenti "django.forms.ImageField" i funkciji "get_image_dimensions". Uz to, otkrivena je i XSS ranjivost.
Posljedica:
Udaljeni napadač ranjivosti može iskoristiti za DoS i XSS (eng. Cross-site Scripting) napade.
Rješenje:
Rješenje problema sigurnosti je instalacija dostupnih programskih rješenja.
==========================================================================
Ubuntu Security Notice USN-1560-1
September 10, 2012
python-django vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
Summary:
Applications using Django could be made to crash or expose sensitive
information.
Software Description:
- python-django: High-level Python web development framework
Details:
It was discovered that Django incorrectly validated the scheme of a
redirect target. If a user were tricked into opening a specially crafted
URL, an attacker could possibly exploit this to conduct cross-site
scripting (XSS) attacks. (CVE-2012-3442)
It was discovered that Django incorrectly handled validating certain
images. A remote attacker could use this flaw to cause the server to
consume memory, leading to a denial of service. (CVE-2012-3443)
Jeroen Dekkers discovered that Django incorrectly handled certain image
dimensions. A remote attacker could use this flaw to cause the server to
consume resources, leading to a denial of service. (CVE-2012-3444)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
python-django 1.3.1-4ubuntu1.2
Ubuntu 11.10:
python-django 1.3-2ubuntu1.3
Ubuntu 11.04:
python-django 1.2.5-1ubuntu1.2
Ubuntu 10.04 LTS:
python-django 1.1.1-2ubuntu1.5
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1560-1
CVE-2012-3442, CVE-2012-3443, CVE-2012-3444
Package Information:
https://launchpad.net/ubuntu/+source/python-django/1.3.1-4ubuntu1.2
https://launchpad.net/ubuntu/+source/python-django/1.3-2ubuntu1.3
https://launchpad.net/ubuntu/+source/python-django/1.2.5-1ubuntu1.2
https://launchpad.net/ubuntu/+source/python-django/1.1.1-2ubuntu1.5
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