Vulnerability identifier: #VU45482

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2010-4535

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Django
Web applications / CMS

Vendor: Django Software Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The password reset functionality in django.contrib.auth in Django before 1.1.3, 1.2.x before 1.2.4, and 1.3.x before 1.3 beta 1 does not validate the length of a string representing a base36 timestamp, which allows remote attackers to cause a denial of service (resource consumption) via a URL that specifies a large base36 integer.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Django: 0.91 - 0.96, 1.0 - 1.3

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External links
http://code.djangoproject.com/changeset/15032
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053041.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053072.html
http://secunia.com/advisories/42715
http://secunia.com/advisories/42827
http://secunia.com/advisories/42913
http://www.djangoproject.com/weblog/2010/dec/22/security/
http://www.openwall.com/lists/oss-security/2010/12/23/4
http://www.openwall.com/lists/oss-security/2011/01/03/5
http://www.securityfocus.com/bid/45563
http://www.ubuntu.com/usn/USN-1040-1
http://www.vupen.com/english/advisories/2011/0048
http://www.vupen.com/english/advisories/2011/0098
http://bugzilla.redhat.com/show_bug.cgi?id=665373

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.