PROBLEM:
Mozilla Code Installation Through Holding Down Enter.
PLATFORM:
Versions prior to the following are vulnerable:
Firefox 7.0
Firefox 3.6.23
Thunderbird 7.0
SeaMonkey 2.4
ABSTRACT:
Attackers can exploit this issue by enticing an unsuspecting victim into viewing and interacting with a malicious Web page. An attacker may be able to exploit this issue to bypass a confirmation dialog and install an arbitrary add-on. This may aid in further attacks.
reference LINKS:
Mozilla Foundation Security Advisory 2011-40
Firefox Security Advisories
CVE-2011-2372
CVE-2011-3001
IMPACT ASSESSMENT:
High
Discussion:
If a user holds down the Enter key--as part of a game or test, perhaps--a malicious page could pop up a download dialog where the held key would then activate the default Open action. For some file types this would be merely annoying (the equivalent of a pop-up) but other file types have powerful scripting capabilities. And this would provide an avenue for an attacker to exploit a vulnerability in applications not normally exposed to potentially hostile internet content. There is a similar flaw with manual plugin installation using the PLUGINSPAGE attribute. It was possible to create an internal error that suppressed a confirmation dialog, such that holding enter would lead to the installation of an arbitrary add-on. (This variant did not affect Firefox 3.6)
Impact:
Attackers can exploit this issue by enticing an unsuspecting victim into viewing and interacting with a malicious Web page. An attacker may be able to exploit this issue to bypass a confirmation dialog and install an arbitrary add-on. This may aid in further attacks.
Solution:
Updating Firefox
The vendor has Fixed:
Firefox 7.0
Firefox 3.6.23
Thunderbird 7.0
SeaMonkey 2.4