Mozilla Firefox allows for cookies to be set with a null domain (aka domainless cookies), which allows remote attackers to pass information between arbitrary domains and track user activity, as demonstrated by the domain attribute in the document.cookie variable in a javascript: window.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | * |
| Firefox | Ubuntu | dapper | * |
| Firefox | Ubuntu | edgy | * |
| Firefox | Ubuntu | feisty | * |
| Firefox | Ubuntu | gutsy | * |
| Iceape | Ubuntu | gutsy | * |
| Mozilla | Ubuntu | dapper | * |
| Mozilla | Ubuntu | edgy | * |