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Microsoft Issues Security Patches for 89 Flaws — IE 0-Day Under Active Attacks

Microsoft Issues Security Patches for 89 Flaws — IE 0-Day Under Active Attacks
Mar 10, 2021
Microsoft plugged as many as  89 security flaws  as part of its monthly Patch Tuesday updates released today, including fixes for an actively exploited zero-day in Internet Explorer that could permit an attacker to run arbitrary code on target machines. Of these flaws, 14 are listed as Critical, and 75 are listed as Important in severity, out of which two of the bugs are described as publicly known, while five others have been reported as under active attack at the time of release. Among those five security issues are a clutch of vulnerabilities known as  ProxyLogon  (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065) that allows adversaries to break into Microsoft Exchange Servers in target environments and subsequently allow the installation of unauthorized web-based backdoors to facilitate long-term access. But in the wake of Exchange servers coming under  indiscriminate assault  toward the end of February by multiple threat groups looking to exploit the vulner

Microsoft Issues Patches for In-the-Wild 0-day and 55 Others Windows Bugs

Microsoft Issues Patches for In-the-Wild 0-day and 55 Others Windows Bugs
Feb 10, 2021
Microsoft on Tuesday  issued fixes for 56 flaws , including a critical vulnerability that's known to be actively exploited in the wild. In all, 11 are listed as Critical, 43 are listed as Important, and two are listed as Moderate in severity — six of which are previously disclosed vulnerabilities. The updates cover .NET Framework, Azure IoT, Microsoft Dynamics, Microsoft Edge for Android, Microsoft Exchange Server, Microsoft Office, Microsoft Windows Codecs Library, Skype for Business, Visual Studio, Windows Defender, and other core components such as Kernel, TCP/IP, Print Spooler, and Remote Procedure Call (RPC). A Windows Win32k Privilege Escalation Vulnerability The most critical of the flaws is a Windows Win32k privilege escalation vulnerability (CVE-2021-1732, CVSS score 7.8) that allows attackers with access to a target system to run malicious code with elevated permissions. Microsoft credited JinQuan, MaDongZe, TuXiaoYi, and LiHao of DBAPPSecurity for discovering and re

Making Sense of Operational Technology Attacks: The Past, Present, and Future

Making Sense of Operational Technology Attacks: The Past, Present, and Future
Mar 21, 2024Operational Technology / SCADA Security
When you read reports about cyber-attacks affecting operational technology (OT), it's easy to get caught up in the hype and assume every single one is sophisticated. But are OT environments all over the world really besieged by a constant barrage of complex cyber-attacks? Answering that would require breaking down the different types of OT cyber-attacks and then looking back on all the historical attacks to see how those types compare.  The Types of OT Cyber-Attacks Over the past few decades, there has been a growing awareness of the need for improved cybersecurity practices in IT's lesser-known counterpart, OT. In fact, the lines of what constitutes a cyber-attack on OT have never been well defined, and if anything, they have further blurred over time. Therefore, we'd like to begin this post with a discussion around the ways in which cyber-attacks can either target or just simply impact OT, and why it might be important for us to make the distinction going forward. Figure 1 The Pu

Experts Detail A Recent Remotely Exploitable Windows Vulnerability

Experts Detail A Recent Remotely Exploitable Windows Vulnerability
Jan 23, 2021
More details have emerged about a security feature bypass vulnerability in Windows NT LAN Manager ( NTLM ) that was addressed by Microsoft as part of its monthly  Patch Tuesday updates  earlier this month. The flaw, tracked as  CVE-2021-1678  (CVSS score 4.3), was described as a "remotely exploitable" bug found in a vulnerable component bound to the network stack, although exact details of the issue remained unknown. Now according to researchers from Crowdstrike, the security bug, if left unpatched, could allow a bad actor to achieve remote code execution via an NTLM relay. "This vulnerability allows an attacker to relay NTLM authentication sessions to an attacked machine, and use a printer spooler  MSRPC  interface to remotely execute code on the attacked machine," the researchers  said  in a Friday advisory. NTLM relay attacks are a kind of man-in-the-middle (MitM) attacks that typically permit attackers with access to a network to intercept legitimate authe

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Microsoft Issues Patches for Defender Zero-Day and 82 Other Windows Flaws

Microsoft Issues Patches for Defender Zero-Day and 82 Other Windows Flaws
Jan 13, 2021
For the first patch Tuesday of 2021, Microsoft released  security updates  addressing a total of 83 flaws spanning as many as 11 products and services, including an actively exploited zero-day vulnerability. The latest security patches cover Microsoft Windows, Edge browser, ChakraCore, Office and Microsoft Office Services, and Web Apps, Visual Studio, Microsoft Malware Protection Engine, .NET Core, ASP .NET, and Azure. Of these 83 bugs, 10 are listed as Critical, and 73 are listed as Important in severity. The most severe of the issues is a remote code execution (RCE) flaw in Microsoft Defender ( CVE-2021-1647 ) that could allow attackers to infect targeted systems with arbitrary code. Microsoft Malware Protection Engine (mpengine.dll) provides the scanning, detection, and cleaning capabilities for Microsoft Defender antivirus and antispyware software. The last version of the software affected by the flaw is 1.1.17600.5, before it was addressed in version 1.1.17700.4. The bug is

Microsoft Releases Windows Security Updates For Critical Flaws

Microsoft Releases Windows Security Updates For Critical Flaws
Nov 11, 2020
Microsoft formally released fixes for 112 newly discovered security vulnerabilities as part of its  November 2020 Patch Tuesday , including an actively exploited zero-day flaw disclosed by Google's security team last week. The rollout addresses flaws, 17 of which are rated as Critical, 93 are rated as Important, and two are rated Low in severity, once again bringing the patch count over 110 after a drop last month. The security updates encompass a range of software, including Microsoft Windows, Office and Office Services and Web Apps, Internet Explorer, Edge, ChakraCore, Exchange Server, Microsoft Dynamics, Windows Codecs Library, Azure Sphere, Windows Defender, Microsoft Teams, and Visual Studio. Chief among those fixed is  CVE-2020-17087  (CVSS score 7.8), a buffer overflow flaw in Windows Kernel Cryptography Driver ("cng.sys") that was  disclosed on October 30  by the Google Project Zero team as being used in conjunction with a Chrome zero-day to compromise Window

Microsoft Releases Patches For Critical Windows TCP/IP and Other Bugs

Microsoft Releases Patches For Critical Windows TCP/IP and Other Bugs
Oct 14, 2020
Microsoft on Tuesday issued fixes for 87 newly discovered security vulnerabilities as part of its  October 2020 Patch Tuesday , including two critical remote code execution (RCE) flaws in Windows TCP/IP stack and Microsoft Outlook. The flaws, 11 of which are categorized as Critical, 75 are ranked Important, and one is classified Moderate in severity, affect Windows, Office and Office Services and Web Apps, Visual Studio, Azure Functions, .NET Framework, Microsoft Dynamics, Open Source Software, Exchange Server, and the Windows Codecs Library. Although none of these flaws are listed as being under active attack, six vulnerabilities are listed as publicly known at the time of release. Chief among the most critical bugs patched this month include  CVE-2020-16898  (CVSS score 9.8). According to Microsoft, an attacker would have to send specially crafted ICMPv6 Router Advertisement packets to a remote Windows computer to exploit the RCE flaw in the TCP/IP stack to execute arbitrary code

Adobe Issues July 2020 Critical Security Patches for Multiple Software

Adobe Issues July 2020 Critical Security Patches for Multiple Software
Jul 14, 2020
Adobe today released software updates to patch a total of 13 new security vulnerabilities affecting 5 of its widely used applications. Out of these 13 vulnerabilities, four have been rated critical, and nine are important in severity. The affected products that received security patches today include: Adobe Creative Cloud Desktop Application Adobe Media Encoder Adobe Genuine Service Adobe ColdFusion Adobe Download Manager Adobe Creative Cloud Desktop Application versions 5.1 and earlier for Windows operating systems contain four vulnerabilities, one of which is a critical symlink issue (CVE-2020-9682) leading to arbitrary file system write attacks. According to the advisory , the other three important flaws in this Adobe software are privilege escalation issues. Adobe Media Encoder contains two critical arbitrary code execution (CVE-2020-9650 and CVE-2020-9646) and one important information disclosure issues, affecting both Windows and macOS users running Media En

Microsoft Issues Patches for 3 Bugs Exploited as Zero-Day in the Wild

Microsoft Issues Patches for 3 Bugs Exploited as Zero-Day in the Wild
Apr 14, 2020
It's April 2020 Patch Tuesday , and during these challenging times of coronavirus pandemic, this month's patch management process would not go easy for many organizations where most of the resources are working remotely. Microsoft today released the latest batch of software security updates for all supported versions of its Windows operating systems and other products that patch a total of 113 new security vulnerabilities, 17 of which are critical and 96 rated important in severity. Patches for 4 Zero-Days Exploited In the Wild Most importantly, two of the security flaws have been reported as being publicly known at the time of release, and the 3 are being actively exploited in the wild by hackers. One of the publicly disclosed flaws, which was also exploited as zero-day, resides in the Adobe Font Manager Library used by Windows, the existence of which Microsoft revealed last month within an early security warning for its millions of users. Tracked as CVE-2020-10

Update Microsoft Windows Systems to Patch 99 New Security Flaws

Update Microsoft Windows Systems to Patch 99 New Security Flaws
Feb 11, 2020
A few hours after Adobe today released security updates for five of its widely-distributed software, Microsoft also issued its February 2020 Patch Tuesday edition with patches for a total of 99 new vulnerabilities. According to the advisories, 12 of the total issues patched by the tech giant this month are critical in severity, and the remaining 87 have been listed as important. Five of the bugs are listed as publicly known at the time of release, four of which are important in severity and one critical ( CVE-2020-0674 ) that is also listed as under active attack. Microsoft warned about this zero-day vulnerability in Internet Explorer (IE) browser last month when it released an advisory without releasing a patch for millions of its affected users. As explained previously, this flaw could allow a remote attacker to execute arbitrary code on targeted computers and take full control over them just by convincing victims into opening a maliciously crafted web page on the vulner

Adobe Releases Patches for Dozens of Critical Flaws in 5 Software

Adobe Releases Patches for Dozens of Critical Flaws in 5 Software
Feb 11, 2020
Here comes the second 'Patch Tuesday' of this year. Adobe today released the latest security updates for five of its widely used software that patch a total of 42 newly discovered vulnerabilities, 35 of which are critical in severity. The first four of the total five affected software, all listed below, are vulnerable to at least one critical arbitrary code execution vulnerability that could allow attackers to take full control of vulnerable systems. Adobe Framemaker Adobe Acrobat and Reader Adobe Flash Player Adobe Digital Edition Adobe Experience Manager In brief, Adobe Framemaker for Windows, an advanced document processing software, contains 21 flaws, and all of them are critical buffer error, heap overflow, memory corruption, and out-of-bounds write issues, leading to code execution attacks. Adobe Acrobat and Reader for Windows and macOS also contain 12 similar critical code execution vulnerabilities, along with 3 other important information disclosure

Adobe Releases First 2020 Patch Tuesday Software Updates

Adobe Releases First 2020 Patch Tuesday Software Updates
Jan 14, 2020
Adobe today released software updates to patch a total of 9 new security vulnerabilities in two of its widely used applications, Adobe Experience Manager and Adobe Illustrator. It's the first Patch Tuesday for the year 2020 and one of the lightest patch releases in a long time for Adobe users. Moreover, none of the security vulnerabilities patched this month were either publicly disclosed or found being actively exploited in the wild. 5 of the 9 security vulnerabilities are 'critical' in severity, and all of them affect Adobe Illustrator CC versions 24.0 and earlier, which were reported to the company by Fortinet's FortiGuard Labs researcher Honggang Ren. According to an advisory published by Adobe, all five critical issues in Adobe Illustrator software are memory corruption bugs that could allow an attacker to execute arbitrary code on targeted systems in the context of the current user. The rest 4 security vulnerabilities affect Adobe Experience Manager —

Adobe Releases Patches for 'Likely Exploitable' Critical Vulnerabilities

Adobe Releases Patches for 'Likely Exploitable' Critical Vulnerabilities
Dec 10, 2019
The last Patch Tuesday of 2019 is finally here. Adobe today released updates for four of its widely used software—including Adobe Acrobat and Reader, Photoshop CC, ColdFusion, and Brackets—to patch a total of 25 new security vulnerabilities. Seventeen of these flaws have been rated as critical in severity, with most of them carrying high priority patches, indicating that the vulnerabilities are more likely to be used in real-world attacks, but there are currently no known exploits in the wild. The software update for Adobe Acrobat and Reader for Windows and macOS operating systems addresses a total of 21 security vulnerabilities, 14 of which are critical, and rest are important in severity. Upon successful exploitation, all critical vulnerabilities in Adobe Acrobat and Reader software lead to arbitrary code execution attacks, allowing attackers to take complete control of targeted systems. Adobe Photoshop CC for Windows and macOS contains patches for two critical arbitrary

Adobe Releases Out-of-Band Security Patches for 82 Flaws in Various Products

Adobe Releases Out-of-Band Security Patches for 82 Flaws in Various Products
Oct 15, 2019
No, it's not a patch Tuesday. It's the third Tuesday of the month, and as The Hacker News shared an early heads-up late last week on Twitter, Adobe today finally released pre-announced out-of-band security updates to patch a total of 82 security vulnerabilities across its various products. The affected products that received security patches today include: Adobe Acrobat and Reader Adobe Experience Manager Adobe Experience Manager Forms Adobe Download Manager Out of 82 security vulnerabilities, 45 are rated critical, and all of them affect Adobe Acrobat and Reader and which, if exploited successfully, could lead to arbitrary code execution in the context of the current user. A majority of critical-rated vulnerabilities (i.e., 26) in Adobe Acrobat and Reader reside due to use-after-free, 6 due to out-of-bounds write, 4 are type confusion bugs, 4 due to untrusted pointer dereference, 3 are heap overflow bugs, one buffer overrun and one race condition issue. Ad

Microsoft Releases October 2019 Patch Tuesday Updates

Microsoft Releases October 2019 Patch Tuesday Updates
Oct 08, 2019
Microsoft today rolling out its October 2019 Patch Tuesday security updates to fix a total of 59 vulnerabilities in Windows operating systems and related software, 9 of which are rated as critical, 49 are important, and one is moderate in severity. What's good about this month's patch update is that after a very long time, none of the security vulnerabilities patched by the tech giant this month is being listed as publicly known or under active attack. Moreover, there is no roll-up patch for Adobe Flash Player bundled in Windows update for this month. Besides this, Microsoft has also put up a notice as a reminder for Windows 7 and Windows Server 2008 R2 users, warning them that the extended support for these two operating systems is about to end in the next two months and that they will no longer receive updates as of January 14, 2020. Two of the critical vulnerabilities patched this month are remote code execution flaws in the VBScript engine, and both exist in the way VBS

Adobe Issues Critical Patches for ColdFusion, Flash Player, Campaign

Adobe Issues Critical Patches for ColdFusion, Flash Player, Campaign
Jun 11, 2019
It's Patch Tuesday week! Adobe has just released the latest June 2019 software updates to address a total 11 security vulnerabilities in its three widely-used products Adobe ColdFusion, Flash Player, and Adobe Campaign. Out of these, three vulnerabilities affect Adobe ColdFusion, a commercial rapid web application development platform—all critical in severity—that could lead to arbitrary code execution attacks. Here below you can find brief information about all newly patched ColdFusion flaws : CVE-2019-7838 — This vulnerability has been categorized as "File extension blacklist bypass" and can be exploited if the file uploads directory is web accessible. CVE-2019-7839 — There's a command injection vulnerability in ColdFusion 2016 and 2018 editions, but it does not impact ColdFusion version 11. CVE-2019-7840 — This flaw originates from the deserialization of untrusted data and also leads to arbitrary code execution on the system. Besides ColdFusion

Adobe Releases Critical Patches for Flash, Acrobat Reader, and Media Encoder

Adobe Releases Critical Patches for Flash, Acrobat Reader, and Media Encoder
May 14, 2019
Adobe today released its monthly software updates to patch a total of 87 security vulnerabilities in its Adobe Acrobat and Reader, Flash Player and Media Encoder, most of which could lead to arbitrary code execution attacks or worse. None of the flaws patched this month in Adobe products has been found exploited in the wild. Out of 87 total flaws, a whopping number of vulnerabilities (i.e., 84 in total) affect Adobe Acrobat and Reader applications alone, where 42 of them are critical and rest 42 are important in severity. Upon successful exploitation, all critical vulnerabilities in Adobe Acrobat and Reader software lead to arbitrary code execution, allowing attackers to take complete control over targeted systems. Adobe has released updated versions of Acrobat and Reader software for Windows and macOS operating systems to address these security vulnerabilities. The update for Adobe Flash Player , which will receive security patch updates until the end of 2020, comes this

Adobe Releases February 2019 Patch Updates For 75 Vulnerabilities

Adobe Releases February 2019 Patch Updates For 75 Vulnerabilities
Feb 12, 2019
Welcome back! Adobe has today released its monthly security updates to address a total of 75 security vulnerabilities across its various products, 71 of which resides in Adobe Acrobat and Reader alone. February 2019 patch Tuesday updates address several critical and important vulnerabilities in Adobe Acrobat Reader DC, Adobe Coldfusion, Creative Cloud Desktop Application, and Adobe Flash Player for Windows, macOS, Linux, and Chrome OS. According to the advisory released today, 43 out of 71 vulnerabilities addressed by Adobe in Acrobat and Reader are rated as critical in severity, most of which could lead to arbitrary code execution in the context of the current user upon successful exploitation. The update also includes a permanent fix for a critical, publicly disclosed zero-day vulnerability (CVE 2019-7089) impacting Adobe Reader that could allow remote attackers to steal targeted Windows NTLM hash passwords just by tricking victims into opening a specially crafted PDF fi

Microsoft releases tons of Security Updates to patch 44 vulnerabilities

Microsoft releases tons of Security Updates to patch 44 vulnerabilities
Jun 15, 2016
Microsoft has released 16 security bulletins on Tuesday resolving a total of 44 security holes in its software, including Windows, Office, Exchange Server, Internet Explorer and Edge. Five bulletins have been rated "critical" that could be used to carry out remote code execution and affected: Windows, Internet Explorer (IE), Edge (the new, improved IE), Microsoft Office and Office services; and the remaining 11 are marked important. One of the critical issues, MS16-071 that caused alarm bells to go off for many security experts involves a Use-After-Free bug (CVE-2016-3227), which affects Microsoft Windows Domain Name System (DNS) servers for Windows Server 2012 and 2012 R2. The vulnerability resides in the way servers handle requests. Attackers could send a specially crafted request to a DNS server and convinced it to run arbitrary code in the context of the Local System Account, Microsoft's advisory warns. Another critical vulnerability is addressed in MS16-070, which patc

Microsoft Kills Public Patch Tuesday Advance Notifications; Now for Paid Members Only

Microsoft Kills Public Patch Tuesday Advance Notifications; Now for Paid Members Only
Jan 10, 2015
Microsoft began issuing Patch Tuesday updates publically in advance over ten years ago, but from next every second Tuesday of the Month, if you want to see what security patches Microsoft is going to issue, then you will have to pay for it. UPDATE ALERTS FOR PAID CUSTOMERS ONLY Yes right, Microsoft has decided to ditch its Advanced Notification Service (ANS) and will no longer be releasing a public blog post to preview what is to come on Patch Tuesday. Microsoft is facing fierce criticism by industry experts for its decision to make advanced security bulletin available only to those who pay a premium. Note: Only advance notifications are now paid, but security updates/patches are free. NO MORE "OUT-OF-BAND" PUBLIC SECURITY ALERTS In the post on the Microsoft Security Response Center blog , Chris Betz, senior director at Microsoft's security research arm, said: " more and more customers today are seeking to cut through the clutter and obtain s

Microsoft set to deliver Patches for three Critical flaws, but no patch for Office Zero-day vulnerability

Microsoft set to deliver Patches for three Critical flaws, but no patch for Office Zero-day vulnerability
Nov 09, 2013
Microsoft has released advanced notification for the November 2013 security updates that are scheduled to be released on November 12, 2013. The company plans to deliver eight security bulletins for Windows 8.1, three of them are rated critical and five are important. But there's no relief in sight for a zero-day vulnerability ( CVE-2013-3906 ) in how Office handles .TIFF graphics files . The bulletins listed in Microsoft's advanced notification as critical are for remote code execution vulnerabilities in Windows operating system and the remaining vulnerabilities listed as important are said to be remote code execution, elevation of privilege, information disclosure and denial of service flaws affecting Windows operating system, as well as Microsoft Office. A malicious zero day attack capable of hijacking your PC via a vulnerability found in Windows, Office, and Lync is being exploited more widely than originally thought. Some new reports of the security resea
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