Patch Tuesday: Microsoft Releases Update to Fix 53 Vulnerabilities
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2017-11827 +1 in the same advisory: …11848 | Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Int Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how Microsoft browsers handle objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability". NVD description · AI analysis pending | 7.5 group max | 8% |
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| CVE-2017-11847 +1 in the same advisory: …11830 | Windows kernel in Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and RT1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 170 Windows kernel in Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and RT1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to run arbitrary code in kernel mode, install programs, view, change or delete data, and create new accounts with full user rights due to improperly handing objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability". NVD description · AI analysis pending | 7.8 group max | 6% |
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| CVE-2017-11873 | ChakraCore and Microsoft Edge in Windows 10 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same use ChakraCore and Microsoft Edge in Windows 10 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11858, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, and CVE-2017-11871. NVD description · AI analysis pending | 7.5 | 70% | PoC |
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| CVE-2017-11839 | Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to take control of an affecte Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to take control of an affected system, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11858, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, CVE-2017-11871, and CVE-2017-11873. NVD description · AI analysis pending | 7.5 | 62% |
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| CVE-2017-11877 | Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2016, Microsoft Office Compatibility Pack Service Pack 3, Microsoft Excel Viewer 2007 Service Pack 3, and Microsoft Excel 2016 for Mac allow a security feature bypass by not enforcing macro settings on an Excel document, aka "Microsoft Excel Security Feature Bypass Vulnerability". NVD description · AI analysis pending | 5.5 | 5% |
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| CVE-2017-11882 | Memory Corruption RCE in Microsoft Office via Legacy Equation Editor CVE-2017-11882 is a memory corruption vulnerability (CWE-119) in Microsoft Office, residing in the legacy Microsoft Equation Editor component (EQNEDT32.EXE), that allows remote code execution in the context of the current user. Attackers trigger it by persuading a user to open a crafted document, most commonly an RTF file or other Office document carrying a malicious embedded equation object, which overflows a buffer while the equation content is parsed. Successful exploitation lets the attacker run arbitrary code with the privileges of the signed-in user, a typical foothold for malware delivery and, per CISA, for ransomware operations. Any environment running affected Microsoft Office builds is exposed; the source data does not enumerate specific affected version ranges. The flaw is confirmed exploited in the wild: it was added to the CISA Known Exploited Vulnerabilities catalog on 2021-11-03 with known ransomware use and holds a 99.9% EPSS score (percentile 100), though the source data lists no public PoC. Do: Apply Microsoft's Office security updates (November 2017 or later) across all endpoints, prioritizing this KEV-listed flaw given its known ransomware use. On systems that cannot yet be patched, disable or unregister the legacy Equation Editor (EQNEDT32.EXE) and consider blocking or warning on RTF attachments as interim mitigations. Check for indicators of abuse such as EQNEDT32.EXE spawning unexpected child processes after document opens. | 7.8 | 100% | KEV ransomware PoC ×10 |
| masshundreds of millions of users/installations (Office is near-ubiquitous on Windows and in enterprises; the share still unpatched is unknown) | |
| CVE-2017-11883 | .NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly han .NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability". NVD description · AI analysis pending | 7.5 | 9% |
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| CVE-2017-13080 | Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Group Temporal Key (GTK) during the group key handshake, allowing an attacker within radio ra Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Group Temporal Key (GTK) during the group key handshake, allowing an attacker within radio range to replay frames from access points to clients. NVD description · AI analysis pending | 5.3 | 2% |
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| CVE-2017-8700 | ASP.NET Core 1.0, 1.1, and 2.0 allow an attacker to bypass Cross-origin Resource Sharing (CORS) configurations and retrieve normally restricted content from a w ASP.NET Core 1.0, 1.1, and 2.0 allow an attacker to bypass Cross-origin Resource Sharing (CORS) configurations and retrieve normally restricted content from a web application, aka "ASP.NET Core Information Disclosure Vulnerability". NVD description · AI analysis pending | 7.5 | 10% |
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Full article670 words · extracted from thehackernews.com · click to collapse
Swati KhandelwalNov 15, 2017
It's Patch Tuesday—time to update your Windows devices.
Microsoft has released a large batch of security updates as part of its November Patch Tuesday in order to fix a total of 53 new security vulnerabilities in various Windows products, 19 of which rated as critical, 31 important and 3 moderate.
The vulnerabilities impact the Windows OS, Microsoft Office, Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, .NET Core, and more.
At least four of these vulnerabilities that the tech giant has now fixed have public exploits, allowing attackers to exploit them easily. But fortunately, none of the four are being used in the wild, according to Gill Langston at security firm Qualys.
The four vulnerabilities with public exploits identified by Microsoft as CVE-2017-8700 (an information disclosure flaw in ASP.NET Core), CVE-2017-11827 (Microsoft browsers remote code execution), CVE-2017-11848 (Internet Explorer information disclosure) and CVE-2017-11883 (denial of service affecting ASP.NET Core).
Potentially Exploitable Security Vulnerabilities
What's interesting about this month's patch Tuesday is that none of the Windows OS patches are rated as Critical. However, Device Guard Security Feature Bypass Vulnerability (CVE-2017-11830) and Privilege Elevation flaw (CVE-2017-11847) are something you should focus on.
Also, according to an analysis of Patch Tuesday fixes by Zero-Day Initiative, CVE-2017-11830 and another flaw identified as CVE-2017-11877 can be exploited to spread malware.
"CVE-2017-11830 patches a Device Guard security feature bypass vulnerability that would allow malware authors to falsely authenticated files," Zero-Day Initiative said.
"CVE-2017-11877 fixes an Excel security feature bypass vulnerability that fails to enforce macro settings, which are often used by malware developers."
The tech giant also fixed six remote code execution vulnerabilities exist "in the way the scripting engine handles objects in memory in Microsoft browsers."
Microsoft identified these vulnerabilities as CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11871, and CVE-2017-11873, which could corrupt memory in such a way that attackers could execute malicious code in the context of the current user.
"In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website," Microsoft said. "These websites could contain specially crafted content that could exploit the vulnerability."
17-Year-Old MS Office Flaw Lets Hackers Install Malware
Also, you should be extra careful when opening files in MS Office.
All versions of Microsoft Office released in the past 17 years found vulnerable to remote code execution flaw (CVE-2017-11882) that works against all versions of Windows operating system, including the latest Microsoft Windows 10 Creators Update.
However, due to improper memory operations, the component fails to properly handle objects in the memory, corrupting it in such a way that the attacker could execute malicious code in the context of the logged-in user.
Exploitation of this vulnerability requires opening a specially crafted malicious file with an affected version of Microsoft Office or Microsoft WordPad software, which could allow attackers to remotely install malware on targeted computers.
Adobe Patch Tuesday: Patches 62 Vulnerabilities
Besides fixing vulnerabilities in its various products, Microsoft has also released updates for Adobe Flash Player.
These updates correspond with Adobe Update APSB17-33, which patches 62 CVEs for Acrobat and Reader alone. So, Flash Player users are advised to ensure that they update Adobe across their environment to stay protected.
It should also be noted that last Patch Tuesday, Microsoft quietly released the patch for the dangerous KRACK vulnerability (CVE-2017-13080) in the WPA2 wireless protocol.
Therefore, users are also recommended to make sure that they have patched their systems with the last month's security patches.
Alternatively, users are strongly advised to apply November security patches as soon as possible in order to keep hackers and cybercriminals away from taking control of their computers.
For installing security updates, just head on to Settings → Update & security → Windows Update → Check for updates, or you can install the updates manually.
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Text extracted automatically; images, tables and formatting may be missing. Original: https://thehackernews.com/2017/11/microsoft-patch-tuesday.html