Word 出現零時差攻擊，微軟發警報
根據微軟的安全公告，當Word解析一個特製的RTF檔案時，就會造成系統記憶體損壞，並讓駭客有機可趁，取得使用者的系統權限，並於遠端執行任意程式。
因此，使用者只要以Word開啟惡意RTF檔案就有可能受到攻擊，特別是微軟在Outlook 2007、Outlook 2010與Outlook 2013都是以Word作為郵件的預設閱讀工具，所以更容易因為收到惡意郵件而被駭。
微軟表示，目前已發現有少數的目標式攻擊鎖定Word 2010，但受影響的產品還包括Word 2013、Word Viewer、Office for Mac 2011、SharePoint Server 2010/2013、Office Web Apps 2010與Office Web Apps Server 2013等。
Executive Summary
Microsoft is aware of a vulnerability affecting supported versions of Microsoft Word. At this time, we are aware of limited, targeted attacks directed at Microsoft Word 2010. The vulnerability could allow remote code execution if a user opens a specially crafted RTF file using an affected version of Microsoft Word, or previews or opens a specially crafted RTF email message in Microsoft Outlook while using Microsoft Word as the email viewer. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights. Applying the Microsoft Fix it solution, "Disable opening RTF content in Microsoft Word," prevents the exploitation of this issue through Microsoft Word. See the Suggested Actions section of this advisory for more information.
The vulnerability is a remote code execution vulnerability. The issue is caused when Microsoft Word parses specially crafted RTF-formatted data causing system memory to become corrupted in such a way that an attacker could execute arbitrary code. The vulnerability could be exploited through Microsoft Outlook only when using Microsoft Word as the email viewer. Note that by default, Microsoft Word is the email reader in Microsoft Outlook 2007, Microsoft Outlook 2010, and Microsoft Outlook 2013.
On completion of investigation for this vulnerability, Microsoft will take the appropriate action to protect our customers, which may include providing a solution through our monthly security update release process, or an out-of-cycle security update, depending on customer needs.
We are actively working with partners in our Microsoft Active Protections Program (MAPP) to offer information that they can use to provide additional protections to customers. For information about protections released by MAPP partners, see MAPP Partners with Updated Protections.
Microsoft continues to encourage customers to follow the guidance in the Microsoft Safety & Security Center of enabling a firewall, applying all software updates, and installing antimalware software.
Mitigating Factors:
- An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
- In a web-based attack scenario, an attacker could host a website that contains a webpage that contains a specially crafted RTF file that is used to attempt to exploit this vulnerability. In addition, compromised websites and websites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
Recommendation. Please see the Suggested Actions section of this advisory for more information.
哼哼～這麼爛的不良辦公室還要花大＄＄買，而且還經過多年都修補不完的漏洞，真是太扯了！
