[USN-1297-1] Django vulnerabilities
jamie at canonical.com
Fri Dec 9 03:31:54 UTC 2011
Ubuntu Security Notice USN-1297-1
December 09, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Applications using Django could be made to crash or expose sensitive
- python-django: High-level Python web development framework
Pall McMillan discovered that Django used the root namespace when storing
cached session data. A remote attacker could exploit this to modify
Paul McMillan discovered that Django would not timeout on arbitrary URLs
when the application used URLFields. This could be exploited by a remote
attacker to cause a denial of service via resource exhaustion.
Paul McMillan discovered that while Django would check the validity of a
URL via a HEAD request, it would instead use a GET request for the target
of a redirect. This could potentially be used to trigger arbitrary GET
requests via a crafted Location header. (CVE-2011-4138)
It was discovered that Django would sometimes use a request's HTTP Host
header to construct a full URL. A remote attacker could exploit this to
conduct host header cache poisoning attacks via a crafted request.
The problem can be corrected by updating your system to the following
Ubuntu 10.04 LTS:
In general, a standard system update will make all the necessary changes.
CVE-2011-4136, CVE-2011-4137, CVE-2011-4138, CVE-2011-4139
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