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.
https://www.djangoproject.com/weblog/2012/jul/30/security-releases-issued/
http://www.ubuntu.com/usn/USN-1560-1
http://www.openwall.com/lists/oss-security/2012/07/31/2
http://www.openwall.com/lists/oss-security/2012/07/31/1
http://www.mandriva.com/security/advisories?name=MDVSA-2012:143
Published: 2012-07-31
Updated: 2025-04-11
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: High