Security Market Segment LS
Wednesday, 09 August 2017 09:08

Microsoft patches 48 holes, but no fix for SMB zero-day Featured

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Microsoft has issued patches for 48 vulnerabilities in Windows and other products as part of its usual monthly security update, but did not fix a zero-day flaw known as SMBloris that was disclosed to the company in June.

Alongside Microsoft, Adobe has also released updates to fix flaws in Flash Player and Adobe Reader; there are total of 67 fixes, 43 of which are critical.

Microsoft's patches were for Internet Explorer, Microsoft Edge, Microsoft Windows, Microsoft SharePoint and Microsoft SQL Server.

More than half of the patches were for vulnerabilities that were classified as critical, with 27 usable for remote exploits.

Jimmy Graham, an analyst from cloud security provider Qualys, said a vulnerability in the Windows Search service should be patched as a priority.

He said this was the third month which listed a vulnerability in this service. "As with the others, this vulnerability can be exploited remotely via SMB to take complete control of a system, and can impact both servers and workstations."

Graham said many of the vulnerabilities detailed this month involved the Scripting Engine which could affect both Microsoft Office and browsers.

"(It) should be considered for prioritising for workstation-type systems that use email and access the Internet via a browser," he said. "Also of note is a vulnerability in the Windows Font Engine, CVE-2017-8691. This vulnerability can also be exploited through a browser. For systems running Windows 10 and Microsoft Edge, CVE-2017-0293 impacts the PDF viewer functionality."

The SMBloris vulnerability was detailed at the recent DEFCON security conference in Las Vegas by Sean Dillon, a senior security researcher at RiskSense, and his colleague Zach Harding.

When they informed Microsoft about the flaw, the company refused to issue a patch Microsoft said it would issue a  patch as its internal security teams had determined that the flaw was an issue of moderate severity.

Dillon and Harding described SMBloris as a flaw that could be used by a remote attacker to take down a Windows server using about 20 lines of Python code and a Raspberry Pi.


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Sam Varghese

Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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