An integer overflow that could lead to an attacker-controlled heap out-of-bounds write in PDFium in Google Chrome prior to 66.0.3359.170 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file.
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 |
|---|---|
| https://crbug.com/833721 | |
| https://access.redhat.com/errata/RHSA-2018:1446 | vendor advisory |
| https://security.gentoo.org/glsa/201805-06 | vendor advisory |
| https://chromereleases.googleblog.com/2018/05/stable-channel-update-for-desktop.html | |
| http://www.securityfocus.com/bid/104143 | vdb entry |
| https://www.debian.org/security/2018/dsa-4237 | vendor advisory |