The Web Cryptography API (aka WebCrypto) implementation in Blink, as used in Google Chrome before 52.0.2743.116, does not properly copy data buffers, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted JavaScript code, related to NormalizeAlgorithm.cpp and SubtleCrypto.cpp.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Chrome | * | 52.0.2743.82 (including) | |
| Red Hat Enterprise Linux 6 Supplementary | RedHat | chromium-browser-0:52.0.2743.116-1.el6 | * |
| Chromium-browser | Ubuntu | devel | * |
| Chromium-browser | Ubuntu | precise | * |
| Chromium-browser | Ubuntu | trusty | * |
| Chromium-browser | Ubuntu | upstream | * |
| Chromium-browser | Ubuntu | xenial | * |
| Chromium-browser | Ubuntu | yakkety | * |
| Oxide-qt | Ubuntu | devel | * |
| Oxide-qt | Ubuntu | esm-infra/xenial | * |
| Oxide-qt | Ubuntu | trusty | * |
| Oxide-qt | Ubuntu | upstream | * |
| Oxide-qt | Ubuntu | vivid/stable-phone-overlay | * |
| Oxide-qt | Ubuntu | xenial | * |
| Oxide-qt | Ubuntu | yakkety | * |