BeyondTrust Patch Tuesday
May 11, 2010
Microsoft Patch Disclosure
This month, Microsoft released two patches which repair a total of two vulnerabilities. Both of these patches address Remote Code Execution vulnerabilities. Both eEye's Blink® Professional and Blink® Personal Endpoint Security solutions protect from memory-corruption vulnerabilities generically without the need for any updates.
Administrators are advised to patch MS10-030 and MS10-031 immediately to prevent exploitation by attackers, preferably after environment testing or to environments that have the specifically affected software deployed. As always, eEye suggests that users roll out Microsoft patches as fast as possible, preferably after testing the impact on internal applications and network continuity. For those who would like further information regarding the potential risks and remediation requirements of the patches announced today, please consider attending tomorrow's Vulnerability Expert Forum hosted by the eEye Security Research Team.
BULLETIN / ADVISORY DETAILS
Vulnerability in Outlook Express and Windows Mail Could Allow Remote Code Execution (978542)
An attacker, with a malicious mail server, can send malicious response packets to a client-initiated POP3 request. The malicious response packets could trigger an integer overflow which could possibly allow the execution of arbitrary code. Successful exploitation would give the attacker the same privileges as the currently logged on user. If the current user is logged on as an administrator, the attacker would have gained complete control of the system, potentially allowing them to install malicious software to control the computer. The attacker could use it to gain personal and/or private information and launch attacks against other computers throughout the network.
Administrators are urged to roll out this patch as soon as possible to vulnerable systems. Until this is done, users are recommended to use a web-based email interface, instead of a client-sided email application, such as Microsoft Outlook.
Vulnerability in Microsoft Visual Basic for Applications Could Allow Remote Code Execution (978213)
Attackers will try to convince users to open malicious files, sent to them as either a complete document or a link to a document hosted on a malicious site, through spoofed emails, instant messages, or other electronic communication methods. Upon opening the malicious file, the vulnerability would be triggered. If successful, exploitation of the vulnerability would allow the attacker the same privileges as the current user. If the user has administrator rights, the attacker would have complete control of the computer and could install malicious software, such as Trojans and backdoors. These would be used to gather personal and/or private information and launch attacks on more computers throughout the network.
Administrators are urged to roll out this patch as soon as possible to vulnerable systems. In the mean time, administrators should restrict access to VBE6.dll. By doing this, embedded ActiveX controls will be prevented from running inside Microsoft Office documents.
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