An integer overflow in "createImageBitmap()" was reported through the Pwn2Own contest. The fix for this vulnerability disables the experimental extensions to the "createImageBitmap" API. This function runs in the content sandbox, requiring a second vulnerability to compromise a user's computer. This vulnerability affects Firefox ESR < 52.0.1 and Firefox < 52.0.1.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://www.securitytracker.com/id/1038060 | vdb entry third party advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1348168 | issue tracking patch vendor advisory exploit |
| http://www.securityfocus.com/bid/96959 | vdb entry third party advisory |
| http://rhn.redhat.com/errata/RHSA-2017-0558.html | third party advisory vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-08/ | vendor advisory |