Microsoft Patches Six Security Flaws
Microsoft released a series of security patches on Tuesday, including four which were rated critical, and three that affected Windows Vista.
The four critical updates cover vulnerabilities in the Windows Channel Security Package and in Win32 API that could allow remote code execution, a Security update for internet Explorer and an update for Outlook Express and Windows Mail.
Vulnerabilities in the Windows Channel Security Package
This critical security update resolves a privately reported vulnerability in the Secure Channel (Schannel) security package in Windows. The Schannel security package implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) Internet standard authentication protocols. This vulnerability could allow remote code execution if a user viewed a specially crafted Web page using an Internet Web browser or used an application that makes use of SSL/TLS. However, attempts to exploit this vulnerability would most likely result in the Internet Web browser or application exiting. The affected software could be Windows 2000, Windows XP and Windows 2003.
Vulnerability in Win32 API
This critical security update resolves a privately reported vulnerability in a Win32 API. This vulnerability could allow remote code execution or elevation of privilege if the affected API is used locally by a specially crafted application. Therefore, applications that use this component of the Win32 API could be used as a vector for this vulnerability. For example, Internet Explorer uses this Win32 API function when parsing specially crafted Web pages. The affected software could be Windows 2000, Windows XP and Windows 2003.
Cumulative Security Update for Internet Explorer
This critical security update resolves five privately reported vulnerabilities and one publicly disclosed vulnerability. All but one of these vulnerabilities could allow remote code execution if a user viewed a specially crafted Web page using Internet Explorer. One vulnerability could allow spoofing, and also involves a specially crafted Web page. In all remote code execution cases, users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. For the spoofing case, exploitation requires user interaction. The affected software is IE 6 SP1, and IE7 running under Windows XP, Server 2003 or Vista operating systems.
Cumulative Security Update for Outlook Express and Windows Mail
This critical security update resolves two privately reported and two publicly disclosed vulnerabilities. One of these vulnerabilities could allow remote code execution if a user viewed a specially crafted e-mail using Windows Mail in Windows Vista. The other vulnerabilities could allow information disclosure if a user visits a specially crafted Web page using Internet Explorer and cannot be exploited directly in Outlook Express. For the information disclosure vulnerabilities, users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. The affected software is Microsoft outlook Express 6 under Windows XP, and Server 2003. Vista owners should also install the update for Windows Mail.
Vulnerabilities in Microsoft Visio
This important security update resolves two privately discovered and responsibly reported vulnerabilities in addition to other security issues identified during the course of the investigation. The privately reported vulnerabilities could allow remote code execution if a user opened a specially crafted Visio file. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. User interaction is required to exploit these vulnerabilities. The affected software is Microsoft Visio 2002 Service Pack 2 and Visio 2003 Service Pack 2.
Vulnerability in Windows Vista Could Allow Information Disclosure
This moderate security update resolves a privately reported vulnerability. This vulnerability could allow non-privileged users to access local user information data stores including administrative passwords contained within the registry and local file system.
For more information and downloads visit http://www.microsoft.com/technet/security/bulletin/ms07-jun.mspx.
Vulnerabilities in the Windows Channel Security Package
This critical security update resolves a privately reported vulnerability in the Secure Channel (Schannel) security package in Windows. The Schannel security package implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) Internet standard authentication protocols. This vulnerability could allow remote code execution if a user viewed a specially crafted Web page using an Internet Web browser or used an application that makes use of SSL/TLS. However, attempts to exploit this vulnerability would most likely result in the Internet Web browser or application exiting. The affected software could be Windows 2000, Windows XP and Windows 2003.
Vulnerability in Win32 API
This critical security update resolves a privately reported vulnerability in a Win32 API. This vulnerability could allow remote code execution or elevation of privilege if the affected API is used locally by a specially crafted application. Therefore, applications that use this component of the Win32 API could be used as a vector for this vulnerability. For example, Internet Explorer uses this Win32 API function when parsing specially crafted Web pages. The affected software could be Windows 2000, Windows XP and Windows 2003.
Cumulative Security Update for Internet Explorer
This critical security update resolves five privately reported vulnerabilities and one publicly disclosed vulnerability. All but one of these vulnerabilities could allow remote code execution if a user viewed a specially crafted Web page using Internet Explorer. One vulnerability could allow spoofing, and also involves a specially crafted Web page. In all remote code execution cases, users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. For the spoofing case, exploitation requires user interaction. The affected software is IE 6 SP1, and IE7 running under Windows XP, Server 2003 or Vista operating systems.
Cumulative Security Update for Outlook Express and Windows Mail
This critical security update resolves two privately reported and two publicly disclosed vulnerabilities. One of these vulnerabilities could allow remote code execution if a user viewed a specially crafted e-mail using Windows Mail in Windows Vista. The other vulnerabilities could allow information disclosure if a user visits a specially crafted Web page using Internet Explorer and cannot be exploited directly in Outlook Express. For the information disclosure vulnerabilities, users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. The affected software is Microsoft outlook Express 6 under Windows XP, and Server 2003. Vista owners should also install the update for Windows Mail.
Vulnerabilities in Microsoft Visio
This important security update resolves two privately discovered and responsibly reported vulnerabilities in addition to other security issues identified during the course of the investigation. The privately reported vulnerabilities could allow remote code execution if a user opened a specially crafted Visio file. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. User interaction is required to exploit these vulnerabilities. The affected software is Microsoft Visio 2002 Service Pack 2 and Visio 2003 Service Pack 2.
Vulnerability in Windows Vista Could Allow Information Disclosure
This moderate security update resolves a privately reported vulnerability. This vulnerability could allow non-privileged users to access local user information data stores including administrative passwords contained within the registry and local file system.
For more information and downloads visit http://www.microsoft.com/technet/security/bulletin/ms07-jun.mspx.
