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Microsoft Quashes Actively Exploited Zero-Day, Wormable Critical Bugs
In Microsoft’s lightest Patch Tuesday update of the year so far, several security vulnerabilities stand out as must-patch, researchers warn.
Microsoft addressed a pair of important-rated zero-day bugs in its September Patch Tuesday update, including a local privilege-escalation (LPE) that’s being actively exploited in the wild. To boot, it disclosed three separate critical vulnerabilities that could be used for worming attacks.
The patches are part of a cache of just 64 fixed vulnerabilities from Microsoft this week, the fewest for any month this year (and almost a 50% decrease from August). The disclosed bugs affect Microsoft Windows and Windows Components; Azure and Azure Arc; .NET, Visual Studio, .NET Framework; Microsoft Edge (Chromium-based); Office and Office Components; Windows Defender; and Linux Kernel.
A Pair of Zero-Day Vulnerabilities
The actively exploited vulnerability (CVE-2022-37969, with a CVSS score of 7.8) exists in the Windows Common Log File System Driver, which is a general-purpose logging subsystem first introduced in Windows 2003 R2 OS and which has shipped with all later versions. An exploit for the bug allows an attacker with initial system access to elevate their privilege to SYSTEM privileges on a zero-click basis.
“No other technical details are available, but since the vulnerability has low complexity and requires no user interaction, an exploit will likely soon be in the arsenal of both white hats and black hats,” Mike Walters, cybersecurity executive and co-founder of Action1, wrote in an analysis provided to Dark Reading. “It’s recommended that you deploy the patch as soon as possible.”
Dustin Childs of Trend Micro’s Zero Day Initiative (ZDI) noted that it’s likely being deployed in a tidy exploit chain package.
“Bugs of this nature are often wrapped into some form of social engineering attack, such as convincing someone to open a file or click a link,” he wrote in his Patch Tuesday blog post. “Once they do, additional code executes with elevated privileges to take over a system.”
This is one for everyone to patch quickly, he stressed: “Usually, we get little information on how widespread an exploit may be used. However, Microsoft credits four different agencies reporting this bug, so it’s likely beyond just targeted attacks.”
The other zero-day bug (CVE-2022-23960) exists in Windows 11 for ARM64-based Systems. Microsoft didn’t provide any further details, and it was not assigned a CVSS score, but Bharat Jogi, director of vulnerability and threat research at Qualys, offered context in an emailed comment, noting that it’s a processor-based speculative execution issue of the sort made infamous with the Spectre and Meltdown attacks. A successful exploit would give attackers access to sensitive information.
“This [is] a fix for a vulnerability known as Spectre-BHB that affects ARM64-based systems,” he noted. “This vulnerability is a variant of Spectre v2 which has reinvented itself on numerous occasions and has affected various processor architectures since its discovery in 2017.”
He added, “This class of vulnerabilities poses a large headache to the organizations attempting mitigation, as they often require updates to the operating systems, firmware, and in some cases, a recompilation of applications and hardening.”
Five Critical Bugs for September
As mentioned, three of the critical-rated bugs are wormable — i.e., could be used to spread infections from machine to machine with no user interaction.
The most concerning of these is likely CVE-2022-34718, researchers said, which can be found in Windows TCP/IP. It allows a remote, unauthenticated attacker to execute code with elevated privileges on affected systems without user interaction; and it can be exploited by sending a specially crafted IPv6 packet to a Windows node where IPsec is enabled.
“That officially puts it into the ‘wormable’ category and earns it a CVSS rating of 9.8,” Childs said. “Definitely test and deploy this update quickly.”
It should be noted that it only affects systems with IPv6 enabled and IPsec configured, but this is a common setup.
“If a system doesn’t need the IPsec service, disable it as soon as possible,” said Action1’s Walters. “This vulnerability can be exploited in supply chain attacks where contractor and customer networks are connected by an IPsec tunnel. If you have IPsec tunnels in your Windows infrastructure, this update is a must-have.”
The other two wormable bugs, CVE-2022-34722 and CVE-2022-34721, are both found in Windows Internet Key Exchange (IKE) Protocol Extensions. They both allow RCE by sending a specially crafted IP packet to a target machine that is running Windows and has IPsec enabled, and both carry a CVSS score of 9.8.
Walters noted that the vulnerability impacts only IKEv1 and not IKEv2. “However, all Windows Servers are affected because they accept both V1 and V2 packets,” he wrote. “There is no exploit or PoC detected in the wild yet; however, installing the fix is highly advisable.”
The final two critical bugs (CVE-2022-34700 and CVE-2022-35805) both exist in Dynamics 365 (On-Premises), and “could allow an authenticated user to perform SQL injection attacks and execute commands as db_owner within their Dynamics 356 database,” Childs explained. They have a CVSS score of 8.8.
Other Vulnerabilities of Note
As for noncritical flaws to pay attention to first this month, Childs also flagged a denial-of-service bug in Windows DNS server (CVE-2022-34724, CVSS score of 7.5), which can be exploited by remote, unauthenticated attacker to knock out DNS service used to connect to cloud resources and websites.
While there’s no chance of code execution, the bug should be treated as critical, he added. “With so many resources in the cloud, a loss of DNS pointing the way to those resources could be catastrophic for many enterprises,” Childs said.
Rapid7’s Patch Tuesday analysis this month, sent via email, also noted that SharePoint administrators should also be aware of four separate RCE bugs, all rated important (CVE-2022-35823, CVE-2022-37961, CVE-2022-38008, and CVE-2022-38009).
And there’s a large swath of RCE bugs affecting OLE DB Provider for SQL Server and the Microsoft ODBC Driver (CVE-2022-34731; CVE-2022-34733, CVE-2022-35834, CVE-2022-35835, CVE-2022-35836, and CVE-2022-35840).
“These require some social engineering to exploit, by convincing a user to either connect to a malicious SQL Server or open a maliciously crafted .mdb (Access) file,” Greg Wiseman, product manager at Rapid7, explained in the analysis.
Overall, administrators should have an easier time parsing the lighter patch load this month, but ZDI’s Childs noted that the smaller collection is in line with the volume of patches from previous September releases. Qualys’ Jogi also pointed out that while September’s Patch Tuesday clocks in on the lighter side, Microsoft hit a milestone of fixing the 1,000th CVE of the year, meaning the software giant is “likely on track to surpass 2021, which patched 1,200 CVEs in total.”
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Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
Tech giant Microsoft on Tuesday shipped fixes to quash 64 new security flaws across its software lineup, including one zero-day flaw that has been actively exploited in real-world attacks. Of the 64 bugs, five are rated Critical, 57 are rated Important, one is rated Moderate, and one is rated Low in severity. The patches are in addition to 16 vulnerabilities that Microsoft addressed in its
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
This month's Patch Tuesday offers a little something for everyone, including security updates for a zero-day flaw in Microsoft Windows that is under active attack, and another Windows weakness experts say could be used to power a fast-spreading computer worm. Also, Apple has also quashed a pair of zero-day bugs affecting certain macOS and iOS users, and released iOS 16, which includes a nifty new privacy and security feature called "Lockdown Mode." And Adobe axed 63 vulnerabilities in a range of products.
Microsoft SharePoint Remote Code Execution Vulnerability.
Windows DNS Server Denial of Service Vulnerability.
Microsoft SharePoint Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-38008, CVE-2022-38009.
Microsoft SharePoint Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-37961, CVE-2022-38009.
Microsoft Dynamics CRM (on-premises) Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34700.
Microsoft OLE DB Provider for SQL Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34731, CVE-2022-34733, CVE-2022-35834, CVE-2022-35835, CVE-2022-35836.
Windows TCP/IP Remote Code Execution Vulnerability.
Microsoft Dynamics CRM (on-premises) Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-35805.
Microsoft OLE DB Provider for SQL Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34731, CVE-2022-34733, CVE-2022-35834, CVE-2022-35835, CVE-2022-35840.
Microsoft OLE DB Provider for SQL Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34731, CVE-2022-34733, CVE-2022-35835, CVE-2022-35836, CVE-2022-35840.
Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34722.
Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34721.
Microsoft SharePoint Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-37961, CVE-2022-38008.
Windows Common Log File System Driver Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-35803.
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
By Jon Munshaw and Asheer Malhotra. Microsoft released its monthly security update Tuesday, disclosing 64 vulnerabilities across the company’s hardware and software line, a sharp decline from the record number of issues Microsoft disclosed last month. September's security update features five critical vulnerabilities, 10 fewer than were included in last month’s Patch Tuesday. There are two moderate-severity vulnerabilities in this release and a low-security issue that’s already been patched as a part of a recent Google Chromium update. The remainder is considered “important.” The most serious vulnerability exists in several versions of Windows Server and Windows 10 that could allow an attacker to gain the ability to execute remote code (RCE) by sending a singular, specially crafted IPv6 packet to a Windows node where IPSec is enabled. CVE-2022-34718 only affects instances that have IPSec enabled. This vulnerability has a severity score of 9.8 out of 10 and is considered “more likely...
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