CVE-2011-2362

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-06-30 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Mozilla Firefox: through 3.6.17; 1.0, 1.0-preview_release, 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+101)
Mozilla Seamonkey: 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+53)
Mozilla Thunderbird: through 3.1.10; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+77)

References

http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00001.html
http://secunia.com/advisories/45002
http://support.avaya.com/css/P8/documents/100144854
http://support.avaya.com/css/P8/documents/100145333
http://www.debian.org/security/2011/dsa-2268
http://www.debian.org/security/2011/dsa-2269
http://www.debian.org/security/2011/dsa-2273
http://www.mandriva.com/security/advisories?name=MDVSA-2011:111
http://www.mozilla.org/security/announce/2011/mfsa2011-24.html
http://www.redhat.com/support/errata/RHSA-2011-0885.html
http://www.redhat.com/support/errata/RHSA-2011-0886.html
http://www.redhat.com/support/errata/RHSA-2011-0887.html

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