WebKit/Source/core/css/StyleSheetContents.cpp in Blink, as used in Google Chrome before 51.0.2704.63, permits cross-origin loading of CSS stylesheets by a ServiceWorker even when the stylesheet download has an incorrect MIME type, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 14.04 (including) | 14.04 (including) |
| Ubuntu_linux | Canonical | 15.10 (including) | 15.10 (including) |
| Ubuntu_linux | Canonical | 16.04 (including) | 16.04 (including) |
| Debian_linux | Debian | 8.0 (including) | 8.0 (including) |
| Leap | Opensuse | 42.1 (including) | 42.1 (including) |
| Opensuse | Opensuse | 13.2 (including) | 13.2 (including) |
| Enterprise_linux_desktop | Redhat | 6.0 (including) | 6.0 (including) |
| Enterprise_linux_server | Redhat | 6.0 (including) | 6.0 (including) |
| Enterprise_linux_workstation | Redhat | 6.0 (including) | 6.0 (including) |
| Linux_enterprise | Suse | 12.0 (including) | 12.0 (including) |
| Red Hat Enterprise Linux 6 Supplementary | RedHat | chromium-browser-0:51.0.2704.63-1.el6 | * |
| Chromium-browser | Ubuntu | devel | * |
| Chromium-browser | Ubuntu | precise | * |
| Chromium-browser | Ubuntu | trusty | * |
| Chromium-browser | Ubuntu | upstream | * |
| Chromium-browser | Ubuntu | wily | * |
| Chromium-browser | Ubuntu | xenial | * |
| Oxide-qt | Ubuntu | devel | * |
| Oxide-qt | Ubuntu | trusty | * |
| Oxide-qt | Ubuntu | upstream | * |
| Oxide-qt | Ubuntu | vivid/stable-phone-overlay | * |
| Oxide-qt | Ubuntu | wily | * |
| Oxide-qt | Ubuntu | xenial | * |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: