CVE-2011-2362

critical

Description

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.

References

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13693

https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-2351

https://bugzilla.mozilla.org/show_bug.cgi?id=616264

http://www.ubuntu.com/usn/USN-1149-1

http://www.redhat.com/support/errata/RHSA-2011-0888.html

http://www.redhat.com/support/errata/RHSA-2011-0887.html

http://www.redhat.com/support/errata/RHSA-2011-0886.html

http://www.redhat.com/support/errata/RHSA-2011-0885.html

http://www.mozilla.org/security/announce/2011/mfsa2011-24.html

http://www.mandriva.com/security/advisories?name=MDVSA-2011:111

http://www.debian.org/security/2011/dsa-2273

http://www.debian.org/security/2011/dsa-2269

http://www.debian.org/security/2011/dsa-2268

http://support.avaya.com/css/P8/documents/100145333

http://support.avaya.com/css/P8/documents/100144854

http://secunia.com/advisories/45002

http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00001.html

Details

Source: Mitre, NVD

Published: 2011-06-30

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.01226