The bulk cover information disclosure problems, but there are a handful of remote code execution flaws that allow code execution but not privilege escalation. Redmond included 29 fixes in this bundle going all the way back to Windows Vista. MS17-011 Based on this patch update, Uniscribe is a mess.To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted SMBv1 server." An attacker who successfully exploited the vulnerabilities could gain the ability to execute code on the target server. Microsoft admitted: "Remote code execution vulnerabilities exist in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests. In the worst case, a specially built Server Message Block (SMB) 1.0 packet can inject malicious code into a server on the network, and run that code. MS17-010 Windows SME Server gets 6 vulnerabilities patched.The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted PDF content to such sites. To exploit the vulnerability on Windows 10 systems with Microsoft Edge set as the default browser, an attacker could host a specially crafted website that contains malicious PDF content and then convince users to view the website. An attacker could then install programs view, change, or delete data or create new accounts with full user rights. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. The vulnerability could corrupt memory in a way that enables an attacker to execute arbitrary code in the context of the current user. Here's the skinny from Microsoft:Ī remote code execution vulnerability exists when Microsoft Windows PDF Library improperly handles objects in memory. Opening a PDF booby-trapped with malicious code on a vulnerable machine will cause that code to run if you open a page on Windows 10 with Edge, with a bad PDF embedded, you'll be potentially owned immediately. Windows 7 systems aren't affected by this issue. The internet is full of dodgy PDFs, and reading one using Windows 8 or above or any version of Windows Server from 2012 on could allow remote code execution. MS17-009 This patch contains a single critical fix for the Windows PDF library.Microsoft warns "an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code." However, if you're not running the Hyper-V hypervisor then you're safe from this kind of attack. MS17-008 Hyper-V gets an 11-fix bundle this month, the worst being a hypervisor escape from guest to host.An attacker could then install programs view, change, or delete data or create new accounts with full user rights." "An attacker who successfully exploited these vulnerabilities could take control of an affected system. "The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Microsoft Edge," said Redmond. MS17-007 Microsoft's other browser, Edge, was supposed to be lighter weight and more secure, but this bundle resolves a whopping 32 vulnerabilities."An attacker could then install programs view, change, or delete data or create new accounts with full user rights," said Microsoft, which is super bad if the user is an administrator. The bulk deal with memory corruption issues, but the worst would allow a remote code execution attack when an IE user visited a malicious website. MS17-006 This fixes 12 CVE-listed flaws in Internet Explorer.We've got a full rundown of this month's security fixes – make sure you install them ASAP before miscreants start exploiting them in the wild:
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