CVE-2012-1889

CVE-2012-1889 is a vulnerability in Internet Explorer (IE) that allows remote attackers to execute arbitrary code or cause a denial of service (DoS) attack via a crafted web page.

CVE-2012-1889 affects all versions of IE, from IE6 to IE9, on Windows XP, Vista, and 7.

You can protect yourself by installing the security update provided by Microsoft. Additionally, you can use a different web browser, such as Google Chrome or Mozilla Firefox, until the security update is installed.

CVE-2012-1889 works by exploiting a use-after-free vulnerability in IE's handling of certain objects in memory. Attackers can create a specially-crafted web page that triggers this vulnerability and allows them to execute arbitrary code or cause a DoS attack.

Yes, Microsoft released a security update for CVE-2012-1889 on June 12, 2012 as part of its monthly Patch Tuesday updates.

You should run a full scan of your computer using an up-to-date antivirus software and anti-malware software. You should also install the security update provided by Microsoft and ensure that your web browser is up-to-date.

Yes, there were known exploits in the wild for CVE-2012-1889 before Microsoft released the security update. This vulnerability was actively exploited by the Poison Ivy Trojan, among others.

CVE-2012-1889 has a base score of 9.3 out of 10 on the Common Vulnerability Scoring System (CVSS), indicating a high severity level.

The Common Vulnerability Scoring System (CVSS) is a standardized system used to assess and communicate the severity of vulnerabilities in software systems.

If you are unable to install the security update provided by Microsoft, you can consider using Microsoft's Enhanced Mitigation Experience Toolkit (EMET) to provide additional protection against CVE-2012-1889. However, you should still try to install the security update as soon as possible.