2012 年 4 月：マイクロソフト　定例セキュリティ更新プログラム情報

Microsoft addresses the following vulnerabilities in its April batch of patches:

• (MS12-023) Cumulative Security Update for Internet Explorer (2675157)
  Risk Rating: Critical
  
  This security update resolves several reported vulnerabilities found in Internet Explorer 6, 7, 8, and 9. Any of the said versions of Internet Explorer installed on normal Windows operating systems are more vulnerable than that of same versions installed on Windows server operating systems. More information is found here.



• (MS12-024) Vulnerability in Windows Could Allow Remote Code Execution (2653956)
  Risk Rating: Critical
  
  This security update resolves a vulnerability found in the Windows Authenticode Signature Verification. The vulnerability exists in the way the said function verifies portable executable (PE) files. Read more here.



• (MS12-025) Vulnerability in .NET Framework Could Allow Remote Code Execution (2671605)
  Risk Rating: Critical
  
  This security update resolves a vulnerability found in the .NET Framework that when exploited could allow remote code execution. The vulnerability exists on several versions of .NET Framework installed on specific Windows operating systems. Read more here.



• (MS12-026) Vulnerabilities in Forefront Unified Access Gateway (UAG) Could Allow Information Disclosure (2663860)
  Risk Rating: Important
  
  Two vulnerabilities found in several versions of Microsoft Forefront Unified Access Gateway 2010 are resolved by applying this particular update. When exploited, one of the vulnerabilities may allow information disclosure. More information can be found here.



• (MS12-027) Vulnerability in Windows Common Controls Could Allow Remote Code Execution (2664258)
  Risk Rating: Critical
  
  This particular security update resolves a vulnerability in Windows common controls. The said function is found in several Microsoft applications. When the vulnerability is successfully exploited, a remote attacker could execute code on the vulnerable system. Read more here.



• (MS12-028) Vulnerability in Microsoft Office Could Allow Remote Code Execution (2639185)
  Risk Rating: Important
  
  A vulnerability found in Microsoft Office 2007 and Microsoft Works is solved by applying this particular update. Users who do not have administrator privileges on an affected system are less affected by this vulnerability. Read more here.