#VU32760 Buffer overflow in Django - CVE-2012-3444

Vulnerability identifier: #VU32760

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-3444

CWE-ID: CWE-119

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 get_image_dimensions function in the image-handling functionality in Django before 1.3.2 and 1.4.x before 1.4.1 uses a constant chunk size in all attempts to determine dimensions, which allows remote attackers to cause a denial of service (process or thread consumption) via a large TIFF image.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Django: 1.3.1

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External links
https://www.debian.org/security/2012/dsa-2529
https://www.mandriva.com/security/advisories?name=MDVSA-2012:143
https://www.openwall.com/lists/oss-security/2012/07/31/1
https://www.openwall.com/lists/oss-security/2012/07/31/2
https://www.ubuntu.com/usn/USN-1560-1
https://www.djangoproject.com/weblog/2012/jul/30/security-releases-issued/

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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.