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Fencer Intel
medium 4.3

CVE-2011-3377 json

The web browser plug-in in IcedTea-Web 1.0.x before 1.0.6 and 1.1.x before 1.1.4 allows remote attackers to bypass the Same Origin Policy (…

published 2014-02-05 12 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3340

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

The web browser plug-in in IcedTea-Web 1.0.x before 1.0.6 and 1.1.x before 1.1.4 allows remote attackers to bypass the Same Origin Policy (SOP) and execute arbitrary script or establish network connections to unintended hosts via an applet whose origin has the same second-level domain, but a different sub-domain than the targeted domain.

Patch / fix

  • icedtea-web Debian 14, Debian 13, Debian 12 1.1.4-1

debian advisories DEBIAN-CVE-2011-3377

  • icedtea-web RHEL 6 1.0.6-1.el6_1
  • icedtea-web-javadoc RHEL 6 1.0.6-1.el6_1

red hat advisories RHSA-2011:1441

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-3377 updated cvss 4.3

IcedTea-Web: second-level domain subdomains and suffix domain SOP bypass

  • Red Hat Enterprise Linux Server (v. 6) icedtea-web 1.0.6-1.el6_1 Red Hat Enterprise Linux Server Optional (v. 6) icedtea-web 1.0.6-1.el6_1, icedtea-web-javadoc 1.0.6-1.el6_1
    fixed: vendor fix RHSA-2011:1441
  • Red Hat Enterprise Linux 5 java-1.6.0-openjdk Red Hat Enterprise Linux 6 java-1.6.0-openjdk, java-1.6.0-openjdk-src, java-1.6.0-openjdk-demo, java-1.6.0-openjdk-javadoc
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.