The gnome-shell plugin 3.4.1 in GNOME allows remote attackers to force the download and installation of arbitrary extensions from extension…

published 2012-10-01 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4362

cvss: 6.8; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

The gnome-shell plugin 3.4.1 in GNOME allows remote attackers to force the download and installation of arbitrary extensions from extensions.gnome.org via a crafted web page.

Patch / fix

distros 1

gnome-shell Debian 14, Debian 13, Debian 12 3.34.0-2

debian advisories DEBIAN-CVE-2012-4427

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-2012-4427 updated 2025-11-21 cvss 5.8

shell: browser integration plugin installs extensions without authorization

Red Hat All currently supported Red Hat products
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

1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

bugzilla.novell.com https://bugzilla.novell.com/show_bug.cgi?id=779473 referenced PoC, tagged "exploit" by a source, unverified
openwall.com http://www.openwall.com/lists/oss-security/2012/09/08/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

bugzilla.novell.com /show_bug.cgi?id=779473
exploit
openwall.com /lists/oss-security/2012/09/08/1
mailing-list, exploit
bugzilla.gnome.org /show_bug.cgi?id=684215
vendor-advisory
openwall.com /lists/oss-security/2012/09/13/19
mailing-list
openwall.com /lists/oss-security/2012/09/18/3
mailing-list
openwall.com /lists/oss-security/2012/09/13/26
mailing-list
securityfocus.com /bid/55556
vdb-entry

Sources

CVE List CVE-2012-4427
NVD CVE-2012-4427

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.

Summary