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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-4427
• https://bugzilla.gnome.org/show_bug.cgi?id=684215
• https://bugzilla.novell.com/show_bug.cgi?id=779473
• http://www.openwall.com/lists/oss-security/2012/09/08/1
• http://www.openwall.com/lists/oss-security/2012/09/13/19
• http://www.openwall.com/lists/oss-security/2012/09/13/26
• http://www.openwall.com/lists/oss-security/2012/09/18/3
• http://www.securityfocus.com/bid/55556