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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

April 14, 2020Mohit Kumar
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
63 New Flaws (Including 0-Days) Windows Users Need to Patch Now

63 New Flaws (Including 0-Days) Windows Users Need to Patch Now

November 14, 2018Swati Khandelwal
It's Patch Tuesday once again…time for another round of security updates for the Windows operating system and other Microsoft products. This month Windows users and system administrators need to immediately take care of a total of 63 security vulnerabilities, of which 12 are rated critical, 49 important and one moderate and one low in severity. Two of the vulnerabilities patched by the tech giant this month are listed as publicly known at the time of release, and one flaw is reported as being actively exploited in the wild by multiple cybercriminal groups. Zero-Day Vulnerability Being Exploited by Cyber Criminals The zero-day vulnerability, tracked as CVE-2018-8589 , which is being exploited in the wild by multiple advanced persistent threat groups was first spotted and reported by security researchers from Kaspersky Labs. The flaw resides in the Win32k component (win32k.sys), which if exploited successfully, could allow a malicious program to execute arbitrary code
Microsoft Issues Patches for Another Four Zero-Day Vulnerabilities

Microsoft Issues Patches for Another Four Zero-Day Vulnerabilities

May 10, 2017Swati Khandelwal
As part of this month's Patch Tuesday, Microsoft has released security patches for a total of 55 vulnerabilities across its products, including fixes for four zero-day vulnerabilities being exploited in the wild. Just yesterday, Microsoft released an emergency out-of-band update separately to patch a remote execution bug ( CVE-2017-0290 ) in Microsoft's Antivirus Engine that comes enabled by default on Windows 7, 8.1, RT, 10 and Server 2016 operating systems. The vulnerability, reported by Google Project Zero researchers, could allow an attacker to take over your Windows PC with just an email, which you haven't even opened yet. May 2017 Patch Tuesday — Out of 55 vulnerabilities, 17 have been rated as critical and affect the company's main operating systems, along with other products like Office, Edge, Internet Explorer, and the malware protection engine used in most of the Microsoft's anti-malware products. Sysadmins all over the world should prioriti
Another Unpatched Adobe Flash Zero-Day vulnerability Exploited in the Wild

Another Unpatched Adobe Flash Zero-Day vulnerability Exploited in the Wild

February 02, 2015Swati Khandelwal
Warning for Adobe users! Another zero-day vulnerability has been discovered in Adobe Flash Player   that is actively being exploited by cyber crooks in drive-by download attacks, security researchers warned today. This is for the third time in last few weeks when Adobe is dealing with a zero day vulnerability in Flash Player. The Adobe Flash Player Vulnerability identified as CVE-2015-0313 , exists in the latest version of Flash Player, i.e. version 16.0.0.296 and earlier. In late January, Adobe released an updated version of its Flash player software that patches zero-day vulnerability, tracked as CVE-2015-0311 , spotted by French security researcher Kafeine. This Adobe Flash Player Vulnerability was also being actively exploited via Malvertisement and drive-by-download attacks. In case of a "drive-by-download" attack, an attacker downloads a malicious software to a victim's computer without their knowledge or explicit consent. As a result, the flaw cou
Microsoft Patches 3 Zero-day Vulnerabilities actively being Exploited in the Wild

Microsoft Patches 3 Zero-day Vulnerabilities actively being Exploited in the Wild

October 15, 2014Swati Khandelwal
As part of monthly patch update, Microsoft released eight security bulletins on Tuesday that address dozens of vulnerabilities including a zero-day flaw reportedly being exploited by Russian hackers to target NATO computers and a pair of zero-day Windows vulnerabilities that attackers have been exploiting to penetrate major corporations' networks. Just a day before yesterday, our team reported you about a Zero-day vulnerability discovered by the cyber intelligence firm iSight Partners affecting all supported versions of Microsoft Windows and is being exploited in a five-year old cyber-espionage campaign against the Ukrainian government and U.S organisations. Researchers at FireEye found two zero-day flaws, used in separate, unrelated attacks involving exploitation of Windows kernel, just a day after iSight partners disclosed zero-day in Windows. The pair of zero-day vulnerabilities could allow an attacker to access a victim's entire system. According to the res
Microsoft Releases Patches for 60 Flaws—Two Under Active Attack

Microsoft Releases Patches for 60 Flaws—Two Under Active Attack

August 14, 2018Mohit Kumar
Get your update caps on. Just a few minutes ago Microsoft released its latest monthly Patch Tuesday update for August 2018, patching a total of 60 vulnerabilities, of which 19 are rated as critical. The updates patch flaws in Microsoft Windows, Edge Browser, Internet Explorer, Office, ChakraCore, .NET Framework, Exchange Server, Microsoft SQL Server and Visual Studio. Two of these vulnerabilities patched by the tech giant is listed as publicly known and being exploited in the wild at the time of release. According to the advisory released by Microsoft, all 19 critical-rated vulnerabilities lead to remote code execution (RCE), some of which could eventually allow attackers to take control of the affected system if exploited successfully. Besides this, Microsoft has also addressed 39 important flaws, one moderate and one low in severity. Here below we have listed brief details of a few critical and publically exploited important vulnerabilities: Internet Explorer Memory Co
Apple Releases Urgent Security Patches For Zero‑Day Bugs Under Active Attacks

Apple Releases Urgent Security Patches For Zero‑Day Bugs Under Active Attacks

May 03, 2021Ravie Lakshmanan
Apple on Monday released security updates for  iOS ,  macOS , and  watchOS  to address three zero-day flaws and expand patches for a fourth vulnerability that the company said might have been exploited in the wild. The weaknesses all concern WebKit, the browser engine which powers Safari and other third-party web browsers in iOS, allowing an adversary to execute arbitrary code on target devices. A summary of the three security bugs are as follows - CVE-2021-30663:  An integer overflow vulnerability that could be exploited to craft malicious web content, which may lead to code execution. The flaw was addressed with improved input validation. CVE-2021-30665:  A memory corruption issue that could be exploited to craft malicious web content, which may lead to code execution. The flaw was addressed with improved state management. CVE-2021-30666:  A buffer overflow vulnerability that could be exploited to craft malicious web content, which may lead to code execution. The flaw was addr
Top 30 Critical Security Vulnerabilities Most Exploited by Hackers

Top 30 Critical Security Vulnerabilities Most Exploited by Hackers

July 29, 2021Ravie Lakshmanan
Intelligence agencies in Australia, the U.K., and the U.S. issued a joint advisory on Wednesday detailing the most exploited vulnerabilities in 2020 and 2021, once again demonstrating how threat actors are able to swiftly weaponize publicly disclosed flaws to their advantage. "Cyber actors continue to exploit publicly known—and often dated—software vulnerabilities against broad target sets, including public and private sector organizations worldwide," the U.S. Cybersecurity and Infrastructure Security Agency (CISA), the Australian Cyber Security Centre (ACSC), the United Kingdom's National Cyber Security Centre (NCSC), and the U.S. Federal Bureau of Investigation (FBI)  noted . "However, entities worldwide can mitigate the vulnerabilities listed in this report by applying the available patches to their systems and implementing a centralized patch management system." The top 30 vulnerabilities span a wide range of software, including remote work, virtual pri
Apple Issues Urgent Patches for 2 Zero-Day Flaws Exploited in the Wild

Apple Issues Urgent Patches for 2 Zero-Day Flaws Exploited in the Wild

June 14, 2021Ravie Lakshmanan
Apple on Monday shipped out-of-band security patches to address two zero-day vulnerabilities in iOS 12.5.3 that it says are being actively exploited in the wild. The latest update, iOS 12.5.4 , comes with fixes for three security bugs, including a memory corruption issue in ASN.1 decoder (CVE-2021-30737) and two flaws concerning its WebKit browser engine that could be abused to achieve remote code execution — CVE-2021-30761  - A memory corruption issue that could be exploited to gain arbitrary code execution when processing maliciously crafted web content. The flaw was addressed with improved state management. CVE-2021-30762  - A use-after-free issue that could be exploited to gain arbitrary code execution when processing maliciously crafted web content. The flaw was resolved with improved memory management. Both CVE-2021-30761 and CVE-2021-30762 were reported to Apple anonymously, with the Cupertino-based company stating in its advisory that it's aware of reports that th
Apple‌ Issues Patches to Combat Ongoing 0-Day Attacks on macOS, tvOS

Apple‌ Issues Patches to Combat Ongoing 0-Day Attacks on macOS, tvOS

May 24, 2021Ravie Lakshmanan
Apple on Monday rolled out security updates for  iOS ,  macOS ,  tvOS ,  watchOS , and  Safari  web browser to fix multiple vulnerabilities, including an actively exploited zero-day flaw in macOS Big Sur and expand patches for two previously disclosed zero-day flaws.  Tracked as CVE-2021-30713, the zero-day concerns a permissions issue in Apple's Transparency, Consent, and Control ( TCC ) framework in macOS that maintains a database of each user's consents. The iPhone maker acknowledged that the issue may have been exploited in the wild but stopped short of sharing specifics. The company noted that it rectified the problem with improved validation. However, in a separate report, mobile device management company Jamf said the bypass flaw was being actively exploited by XCSSET, a malware that's been out in the wild since August 2020 and known to propagate via modified  Xcode IDE projects  hosted on GitHub repositories and plant malicious packages into legitimate apps ins
Another Google Chrome 0-Day Bug Found Actively Exploited In-the-Wild

Another Google Chrome 0-Day Bug Found Actively Exploited In-the-Wild

March 12, 2021Ravie Lakshmanan
Google has addressed yet another actively exploited zero-day in Chrome browser, marking the second such fix released by the company within a month. The browser maker on Friday shipped 89.0.4389.90 for Windows, Mac, and Linux, which is expected to be rolling out over the coming days/weeks to all users. While the update contains a total of five security fixes, the most important flaw rectified by Google concerns a  use after free  vulnerability in its Blink rendering engine. The bug is tracked as CVE-2021-21193. Details about the flaw are scarce except that it was reported to Google by an anonymous researcher on March 9. According to IBM, the vulnerability is rated 8.8 out of 10 on the CVSS scale, and could allow a remote attacker to execute arbitrary code on the target system. "By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service condition on the system," the
Adobe's Year-End Update Patches 87 Flaws in Acrobat Software

Adobe's Year-End Update Patches 87 Flaws in Acrobat Software

December 12, 2018Swati Khandelwal
Adobe is closing out this year with its December Patch Tuesday update to address a massive number of security vulnerabilities for just its two PDF apps—more than double the number of what Microsoft patched this month for its several products. Adobe today released patches for 87 vulnerabilities affecting its Acrobat and Reader software products for both macOS and Windows operating systems, of which 39 are rated as critical and 48 important in severity. The security update comes less than a week after Adobe released patches for a critical zero-day vulnerability (CVE-2018-15982) in Flash Player that was actively being exploited in a targeted attack targeting a Russian state health care institution. The critical vulnerabilities addressed today in Acrobat and Reader include three heap-overflow bugs, five out-of-bounds write flaws, two untrusted pointer dereference issues, two buffer errors, and 24 use-after-free bugs. Upon successful exploitation, all of the above critical vulner
Microsoft Issues Software Updates for 17 Critical Vulnerabilities

Microsoft Issues Software Updates for 17 Critical Vulnerabilities

September 11, 2018Swati Khandelwal
Times to gear up your systems and software. Just a few minutes ago Microsoft released its latest monthly Patch Tuesday update for September 2018, patching a total of 61 security vulnerabilities, 17 of which are rated as critical, 43 are rated Important, and one Moderate in severity. This month's security updates patch vulnerabilities in Microsoft Windows, Edge, Internet Explorer, MS Office, ChakraCore, .NET Framework, Microsoft.Data.OData, ASP.NET, and more. Four of the security vulnerabilities patched by the tech giant this month have been listed as "publicly known" and more likely exploited in the wild at the time of release. CVE-2018-8475: Windows Critical RCE Vulnerability One of the four publicly disclosed vulnerabilities is a critical remote code execution flaw ( CVE-2018-8475 ) in Microsoft Windows and affects all versions Windows operating system, including Windows 10. The Windows RCE vulnerability resides in the way Windows handles specially cra
Hackers Exploit 'Telegram Messenger' Zero-Day Flaw to Spread Malware

Hackers Exploit 'Telegram Messenger' Zero-Day Flaw to Spread Malware

February 13, 2018Swati Khandelwal
A zero-day vulnerability has been discovered in the desktop version for end-to-end encrypted Telegram messaging app that was being exploited in the wild in order to spread malware that mines cryptocurrencies such as Monero and ZCash. The Telegram vulnerability was uncovered by security researcher Alexey Firsh from Kaspersky Lab last October and affects only the Windows client of Telegram messaging software. The flaw has actively been exploited in the wild since at least March 2017 by attackers who tricked victims into downloading malicious software onto their PCs that used their CPU power to mine cryptocurrencies or serve as a backdoor for attackers to remotely control the affected machine, according to a blogpost on Securelist. Here's How Telegram Vulnerability Works The vulnerability resides in the way Telegram Windows client handles the RLO (right-to-left override) Unicode character (U+202E), which is used for coding languages that are written from right to left, li
Microsoft Issues Patches For Severe Flaws, Including Office Zero-Day & DNS Attack

Microsoft Issues Patches For Severe Flaws, Including Office Zero-Day & DNS Attack

October 11, 2017Swati Khandelwal
As part of its "October Patch Tuesday," Microsoft has today released a large batch of security updates to patch a total of 62 vulnerabilities in its products, including a severe MS office zero-day flaw that has been exploited in the wild. Security updates also include patches for Microsoft Windows operating systems, Internet Explorer, Microsoft Edge, Skype, Microsoft Lync and Microsoft SharePoint Server. Besides the MS Office vulnerability, the company has also addressed two other publicly disclosed (but not yet targeted in the wild) vulnerabilities that affect the SharePoint Server and the Windows Subsystem for Linux. October patch Tuesday also fixes a critical Windows DNS vulnerability that could be exploited by a malicious DNS server to execute arbitrary code on the targeted system. Below you can find a brief technical explanation of all above mentioned critical and important vulnerabilities. Microsoft Office Memory Corruption Vulnerability (CVE-2017-11826) T
Microsoft Issues Patches for Actively Exploited Critical Vulnerabilities

Microsoft Issues Patches for Actively Exploited Critical Vulnerabilities

April 12, 2017Swati Khandelwal
Besides a previously undisclosed code-execution flaw in Microsoft Word, the tech giant patches two more zero-day vulnerabilities that attackers had been exploiting in the wild for months, as part of this month's Patch Tuesday . In total, Microsoft patches 45 unique vulnerabilities in its nine products, including three previously undisclosed vulnerabilities under active attack. The first vulnerability ( CVE-2017-0199 ) under attack is a remote-code execution flaw that could allow an attacker to remotely take over a fully patched and up to date computer when the victim opens a Word document containing a booby-trapped OLE2link object. The attack can bypass most exploit mitigations developed by Microsoft, and according to Ryan Hanson of security firm Optiv, in some cases, exploits can execute malicious code even when Protected View is enabled. As The Hacker News reported Monday, this code-execution flaw in Microsoft Word was being exploited by hackers to spread a version
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