30 Apr 2012
This covers vulnerabilities where malicious people are able to gain system access and execute arbitrary code with the privileges of a local user.
Cross-Site Scripting vulnerabilities allow a third party to manipulate the content or behaviour of a web application in a user's browser, without compromising the underlying system.
Different Cross-Site Scripting related vulnerabilities are also classified under this category, including "script insertion" and "cross-site request forgery".
Cross-Site Scripting vulnerabilities are often used against specific users of a website to steal their credentials or to conduct spoofing attacks.
Exposure of sensitive information
Vulnerabilities where documents or credentials are leaked or can be revealed either locally or from remote.
Exposure of system information
Vulnerabilities where excessive information about the system (e.g. version numbers, running services, installation paths, and similar) are exposed and can be revealed from remote and in some cases locally.
This covers vulnerabilities or security issues where malicious users or people can bypass certain security mechanisms of the application.
The actual impact varies significantly depending on the design and purpose of the affected application.
This covers various vulnerabilities where it is possible for malicious users or people to impersonate other users or systems.
Ubuntu has issued an update for firefox. This fixes multiple vulnerabilities, which can be exploited by malicious people to conduct cross-site scripting and spoofing attacks, disclose certain system and sensitive information, bypass certain security restrictions, and compromise a user's system.
For more information:
Apply updated packages.
-- Ubuntu 12.04 LTS --