Opera Multiple Vulnerabilities

Multiple vulnerabilities have been identified in Opera, which could be exploited by attackers to bypass security restrictions or compromise a vulnerable system.

1. A heap overflow error when performing some painting operations on a HTML5 canvas while certain transformations are being applied, which could be exploited by attackers to execute arbitrary code by tricking a user into visiting a specially crafted web page.

2. An error when displaying the download dialog, which could allow attackers to trick a user into running downloaded executables.

3. An error when previewing a news feed, which could allow malicious web sites to silently subscribe a user to a feed.