Headline
Microsoft Patch Tuesday Fixes New Windows Zero-Day; No Patch for Exchange Server Bugs
Microsoft’s Patch Tuesday update for the month of October has addressed a total of 85 security vulnerabilities, including fixes for an actively exploited zero-day flaw in the wild. Of the 85 bugs, 15 are rated Critical, 69 are rated Important, and one is rated Moderate in severity. The update, however, does not include mitigations for the actively exploited ProxyNotShell flaws in Exchange Server
Microsoft’s Patch Tuesday update for the month of October has addressed a total of 85 security vulnerabilities, including fixes for an actively exploited zero-day flaw in the wild.
Of the 85 bugs, 15 are rated Critical, 69 are rated Important, and one is rated Moderate in severity. The update, however, does not include mitigations for the actively exploited ProxyNotShell flaws in Exchange Server.
The patches come alongside updates to resolve 12 other flaws in the Chromium-based Edge browser that have been released since the beginning of the month.
Topping the list of this month’s patches is CVE-2022-41033 (CVSS score: 7.8), a privilege escalation vulnerability in Windows COM+ Event System Service. An anonymous researcher has been credited with reporting the issue.
“An attacker who successfully exploited this vulnerability could gain SYSTEM privileges,” the company said in an advisory, cautioning that the shortcoming is being actively weaponized in real-world attacks.
The nature of the flaw also means that the issue is likely chained with other flaws to escalate privilege and carry out malicious actions on the infected host.
“This specific vulnerability is a local privilege escalation, which means that an attacker would already need to have code execution on a host to use this exploit,” Kev Breen, director of cyber threat research at Immersive Labs, said.
Three other elevation of privilege vulnerabilities of note relate to Windows Hyper-V (CVE-2022-37979, CVSS score: 7.8), Active Directory Certificate Services (CVE-2022-37976, CVSS score: 8.8), and Azure Arc-enabled Kubernetes cluster Connect (CVE-2022-37968, CVSS score: 10.0).
Despite the “Exploitation Less Likely” tag for CVE-2022-37968, Microsoft noted that a successful exploitation of the flaw could permit an “unauthenticated user to elevate their privileges as cluster admins and potentially gain control over the Kubernetes cluster.”
Elsewhere, CVE-2022-41043 (CVSS score: 3.3) – an information disclosure vulnerability in Microsoft Office – is listed as publicly known at the time of release. It could be exploited to leak user tokens and other potentially sensitive information, Microsoft said.
Also fixed by Redmond are eight privilege escalation flaws in Windows Kernel, 11 remote code execution bugs in Windows Point-to-Point Tunneling Protocol and SharePoint Server, and yet another elevation of privilege vulnerability in the Print Spooler module (CVE-2022-38028, CVSS score: 7.8).
Lastly, the Patch Tuesday update further addresses two more privilege escalation flaws in Windows Workstation Service (CVE-2022-38034, CVSS score: 4.3) and Server Service Remote Protocol (CVE-2022-38045, CVSS score: 8.8).
Web security company Akamai, which discovered the two shortcomings, said they “take advantage of a design flaw that allows the bypass of [Microsoft Remote Procedure Call] security callbacks through caching.”
Software Patches from Other Vendors
In addition to Microsoft, security updates have also been released by several vendors to rectify dozens of vulnerabilities, including —
- Adobe
- Android
- Apache Projects
- Apple
- Cisco
- Citrix
- CODESYS
- Dell
- F5
- Fortinet (including an actively exploited flaw)
- GitLab
- Google Chrome
- IBM
- Lenovo
- Linux distributions Debian, Oracle Linux, Red Hat, SUSE, and Ubuntu
- MediaTek
- NVIDIA
- Qualcomm
- Samba
- SAP
- Schneider Electric
- Siemens
- Trend Micro, and
- VMware
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Categories: Exploits and vulnerabilities Categories: News Tags: Microsoft Tags: Apple Tags: Google Tags: Android Tags: Samsung Tags: Xiaomi Tags: Adobe Tags: SAP Tags: VMWare Tags: Fortinet Tags: CVE-2022-41033 Tags: CVE-2022-41040 Tags: zero-day No fix for ProxyNotShell (Read more...) The post Update now! October patch Tuesday fixes actively used zero-day...but not the one you expected appeared first on Malwarebytes Labs.
Microsoft today released updates to fix at least 85 security holes in its Windows operating systems and related software, including a new zero-day vulnerability in all supported versions of Windows that is being actively exploited. However, noticeably absent from this month's Patch Tuesday are any updates to address a pair of zero-day flaws being exploited this past month in Microsoft Exchange Server.
Microsoft today released updates to fix at least 85 security holes in its Windows operating systems and related software, including a new zero-day vulnerability in all supported versions of Windows that is being actively exploited. However, noticeably absent from this month's Patch Tuesday are any updates to address a pair of zero-day flaws being exploited this past month in Microsoft Exchange Server.
The computing giant didn't fix ProxyNotLogon in October's Patch Tuesday, but it disclosed a rare 10-out-of-10 bug and patched two other zero-days, including one being exploited.
Windows Workstation Service Elevation of Privilege Vulnerability.
Microsoft Office Information Disclosure Vulnerability.
Active Directory Certificate Services Elevation of Privilege Vulnerability.
Azure Arc-enabled Kubernetes cluster Connect Elevation of Privilege Vulnerability.
Server Service Remote Protocol Elevation of Privilege Vulnerability.
Windows Print Spooler Elevation of Privilege Vulnerability.
Windows Hyper-V Elevation of Privilege Vulnerability.
Windows COM+ Event System Service Elevation of Privilege Vulnerability.
By Jon Munshaw and Vanja Svajcer. Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line, including seven critical issues in Windows’ point-to-point tunneling protocol. October's security update features 11 critical vulnerabilities, with the remainder being “important.” One of the most notable vulnerabilities Microsoft fixed this month is CVE-2022-41038, a remote code execution issue in Microsoft SharePoint. There are several other SharePoint vulnerabilities included in this month’s Patch Tuesday, though this seems the most severe, as Microsoft continues it to be “more likely” to be exploited. An attacker must be authenticated to the target site with the correct permissions to use manage lists in SharePoint to exploit this vulnerability, and eventually gain the ability to execute remote code on the SharePoint server. CVE-2022-37968, an elevation of privilege vulnerability in Azure Arc Connect, has th...
By Jon Munshaw and Vanja Svajcer. Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line, including seven critical issues in Windows’ point-to-point tunneling protocol. October's security update features 11 critical vulnerabilities, with the remainder being “important.” One of the most notable vulnerabilities Microsoft fixed this month is CVE-2022-41038, a remote code execution issue in Microsoft SharePoint. There are several other SharePoint vulnerabilities included in this month’s Patch Tuesday, though this seems the most severe, as Microsoft continues it to be “more likely” to be exploited. An attacker must be authenticated to the target site with the correct permissions to use manage lists in SharePoint to exploit this vulnerability, and eventually gain the ability to execute remote code on the SharePoint server. CVE-2022-37968, an elevation of privilege vulnerability in Azure Arc Connect, has th...
By Jon Munshaw and Vanja Svajcer. Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line, including seven critical issues in Windows’ point-to-point tunneling protocol. October's security update features 11 critical vulnerabilities, with the remainder being “important.” One of the most notable vulnerabilities Microsoft fixed this month is CVE-2022-41038, a remote code execution issue in Microsoft SharePoint. There are several other SharePoint vulnerabilities included in this month’s Patch Tuesday, though this seems the most severe, as Microsoft continues it to be “more likely” to be exploited. An attacker must be authenticated to the target site with the correct permissions to use manage lists in SharePoint to exploit this vulnerability, and eventually gain the ability to execute remote code on the SharePoint server. CVE-2022-37968, an elevation of privilege vulnerability in Azure Arc Connect, has th...
Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line.
Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line.