Ubuntu Security Notice 857-1 – It was discovered that QtWebKit did not properly handle certain SVGPathList data structures. If a user were tricked into viewing a malicious website, an attacker could exploit this to execute arbitrary code with the privileges of the user invoking the program. Several flaws were discovered in the QtWebKit browser and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that QtWebKit did not properly handle certain XSL stylesheets. If a user were tricked into viewing a malicious website, an attacker could exploit this to read arbitrary local files, and possibly files from different security zones. It was discovered that QtWebKit did not prevent the loading of local Java applets. If a user were tricked into viewing a malicious website, an attacker could exploit this to execute arbitrary code with the privileges of the user invoking the program.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/82662/USN-857-1.txt
Source: https://packetstormsecurity.com/files/82662/Ubuntu-Security-Notice-857-1.html