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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2012/07/31/1 | mailing list |
| https://www.djangoproject.com/weblog/2012/jul/30/security-releases-issued/ | patch vendor advisory |
| http://www.mandriva.com/security/advisories?name=MDVSA-2012:143 | vendor advisory |
| http://www.ubuntu.com/usn/USN-1560-1 | vendor advisory |
| http://www.openwall.com/lists/oss-security/2012/07/31/2 | mailing list |
| http://www.debian.org/security/2012/dsa-2529 | vendor advisory |