76810 : Django verify_exists Location Header Parsing URLField Redirection Weakness
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Timeline

Disclosure Date
2011-09-09

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-4138" target="_blank">CVE</a>)</em> : The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 originally tests a URL's validity through a HEAD request, but then uses a GET request for the new target URL in the case of a redirect, which might allow remote attackers to trigger arbitrary GET requests with an unintended source IP address via a crafted Location header.

Classification

Location: Remote / Network Access
Attack Type: Information Disclosure, Input Manipulation
Impact: Loss of Confidentiality, Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified
OSVDB: Web Related

Solution

Upgrade to version 1.2.7 or higher or 1.3.1 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Unknown or Incomplete

References

CVE ID: 2011-4138 (see also: NVD)
Secunia Advisory ID: 46614 46841 47143
Vendor Specific News/Changelog Entry: http://lists.opensuse.org/opensuse-updates/2012-05/msg00037.html
http://www.debian.org/security/2011/dsa-2332
http://www.ubuntu.com/usn/usn-1297-1/
https://bugzilla.redhat.com/show_bug.cgi?id=737366
https://www.djangoproject.com/weblog/2011/sep/09/
https://www.djangoproject.com/weblog/2011/sep/10/127/
Other Advisory URL: http://openwall.com/lists/oss-security/2011/09/11/1
http://openwall.com/lists/oss-security/2011/09/13/2

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2011-10-19 | Disagree?

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