Same Origin Policy Bypass via Trailing Dot in Cookies

CVE-2011-2362 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:P/A:N

Mozilla Firefox before 3.6.18, Thunderbird before 3.1.11, and SeaMonkey through 2.0.14 do not distinguish between cookies for two domain names that differ only in a trailing dot, which allows remote web servers to bypass the Same Origin Policy via Set-Cookie headers.

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