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Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP
Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report. All vulnerabilities: 105Urgent: 2Critical: 1High: 29Medium: 71Low: 2 Let’s take a look at the most interesting vulnerabilities: Two […]
Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report.
$ cat comments_links.txt
Qualys|October 2022 Patch Tuesday|https://blog.qualys.com/vulnerabilities-threat-research/2022/10/11/october-2022-patch-tuesday
ZDI|THE OCTOBER 2022 SECURITY UPDATE REVIEW|https://www.zerodayinitiative.com/blog/2022/10/11/the-october-2022-security-update-review
$python3.8 process_classify_ms_products.py # Automated classifier for Microsoft products
$ python3.8 vulristics.py --report-type "ms_patch_tuesday_extended" --mspt-year 2022 --mspt-month "October" --mspt-comments-links-path "comments_links.txt" --rewrite-flag "True"
...
MS PT Year: 2022
MS PT Month: October
MS PT Date: 2022-10-11
MS PT CVEs found: 84
Ext MS PT Date from: 2022-09-14
Ext MS PT Date to: 2022-10-10
Ext MS PT CVEs found: 21
ALL MS PT CVEs: 105
...
All vulnerabilities: 105
Urgent: 2
Critical: 1
High: 29
Medium: 71
Low: 2
Let’s take a look at the most interesting vulnerabilities:
- Two vulnerabilities Remote Code Execution – Microsoft Exchange (CVE-2022-41040, CVE-2022-41082). This is the hyped ProxyNotShell, that were disclosed on September 28. The first CVE is a Server-Side Request Forgery (SSRF) vulnerability, and the second one allows Remote Code Execution (RCE) when PowerShell is accessible to the attacker. While Microsoft was relatively quick to acknowledge the vulnerabilities and provide mitigation steps, their guidance has continually changed as the recommended rules to block attack traffic get bypassed. There were no patches for more than a month. At the same time, there are public exploits and signs of exploitation in the wild. Let’s wait for patches to appear on the Microsoft website on the pages for CVE-2022-41040 and CVE-2022-41082.
- Elevation of Privilege – Windows COM+ Event System Service (CVE-2022-41033). This patch fixes a bug that Microsoft lists as being used in active attacks. The impact of exploitation is loss of confidentiality, integrity, and availability. Microsoft has not disclosed how the vulnerability is being exploited or if it is being exploited in targeted or more widespread attacks. They only say that the attack complexity is low and that it requires no user interaction for the attacker to be able to achieve SYSTEM privileges. An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
- In this Patch Tuesday, there were 3 vulnerabilities for which the existence of a publicly available exploit was mentioned in the Microsoft CVSS Temporal Score (Proof-of-Concept Exploit). VM vendors didn’t write much about them. But it seems to me that the existence of a non-public PoC is an important enough factor to draw attention to these vulnerabilities: Remote Code Execution – Windows Point-to-Point Tunneling Protocol (CVE-2022-38000), Elevation of Privilege – Windows Graphics Component (CVE-2022-38051), Spoofing – Microsoft Edge (CVE-2022-41035).
- Elevation of Privilege – Active Directory (CVE-2022-37976). A malicious DCOM client could force a DCOM server to authenticate to it through the Active Directory Certificate Service (ADCS) and use the credential to launch a cross-protocol attack. An attacker who successfully exploited this vulnerability could gain domain administrator privileges. Exploitability Assessment: Exploitation Less Likely.
- Elevation of Privilege – Azure Arc-enabled Kubernetes cluster Connect (CVE-2022-37968). This vulnerability has CVSSv3 score of 10, the highest possible rating. An unauthenticated attacker could exploit this vulnerability in order to gain administrative privileges for a Kubernetes cluster. While updates have been released, users that do not have auto-upgrade enabled must take action to manually upgrade Azure Arc-enabled Kubernetes clusters.
- Remote Code Execution – Microsoft Office (CVE-2022-38048). This bug was reported to the ZDI (Zero Day Initiative) by the researcher known as “hades_kito” and represents a rare Critical-rated Office bug. Most Office vulnerabilities are rated Important since they involve user interaction – typically opening a file. An exception to that is when the Preview Pane is an attack vector, however, Microsoft states that isn’t the case here. Likely the rating results from the lack of warning dialogs when opening a specially crafted file.
Full Vulristics report: ms_patch_tuesday_october2022
Hi! My name is Alexander and I am a Vulnerability Management specialist. You can read more about me here. Currently, the best way to follow me is my Telegram channel @avleonovcom. I update it more often than this site. If you haven’t used Telegram yet, give it a try. It’s great. You can discuss my posts or ask questions at @avleonovchat.
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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.
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.
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.
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.
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.
Any time we welcome this software and hardware into our homes and on our devices, it’s worth considering what sacrifices we might be making elsewhere.
Microsoft has revised its mitigation measures for the newly disclosed and actively exploited zero-day flaws in Exchange Server after it was found that they could be trivially bypassed. The two vulnerabilities, tracked as CVE-2022-41040 and CVE-2022-41082, have been codenamed ProxyNotShell due to similarities to another set of flaws called ProxyShell, which the tech giant resolved last year.
Microsoft has revised its mitigation measures for the newly disclosed and actively exploited zero-day flaws in Exchange Server after it was found that they could be trivially bypassed. The two vulnerabilities, tracked as CVE-2022-41040 and CVE-2022-41082, have been codenamed ProxyNotShell due to similarities to another set of flaws called ProxyShell, which the tech giant resolved last year.
Nicknamed ProxyNotShell, a new exploit used in the wild takes advantage of the recently published Microsoft Server-Side Request Forgery (SSRF) vulnerability CVE-2022-41040 and a second vulnerability, CVE-2022-41082 that allows Remote Code Execution (RCE) when PowerShell is available to unidentified attackers. Based on ProxyShell, this new zero-day abuse risk leverage a chained attack similar to
Nicknamed ProxyNotShell, a new exploit used in the wild takes advantage of the recently published Microsoft Server-Side Request Forgery (SSRF) vulnerability CVE-2022-41040 and a second vulnerability, CVE-2022-41082 that allows Remote Code Execution (RCE) when PowerShell is available to unidentified attackers. Based on ProxyShell, this new zero-day abuse risk leverage a chained attack similar to
‘ProxyNotShell’ abuse less severe than 2021 attack wave due to authentication requirement
‘ProxyNotShell’ abuse less severe than 2021 attack wave due to authentication requirement
Microsoft Exchange Server Elevation of Privilege Vulnerability.
Microsoft on Friday disclosed that a single activity group in August 2022 achieved initial access and breached Exchange servers by chaining the two newly disclosed zero-day flaws in a limited set of attacks aimed at less than 10 organizations globally. "These attacks installed the Chopper web shell to facilitate hands-on-keyboard access, which the attackers used to perform Active Directory
Microsoft on Friday disclosed that a single activity group in August 2022 achieved initial access and breached Exchange servers by chaining the two newly disclosed zero-day flaws in a limited set of attacks aimed at less than 10 organizations globally. "These attacks installed the Chopper web shell to facilitate hands-on-keyboard access, which the attackers used to perform Active Directory
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Microsoft Corp. is investigating reports that attackers are exploiting two previously unknown vulnerabilities in Exchange Server, a technology many organizations rely on to send and receive email. Microsoft says it is expediting work on software patches to plug the security holes. In the meantime, it is urging a subset of Exchange customers to enable a setting that could help mitigate ongoing attacks.
The "ProxyNotShell" security vulnerabilities can be chained for remote code execution and total takeover of corporate email platforms.
The "ProxyNotShell" security vulnerabilities can be chained for remote code execution and total takeover of corporate email platforms.
Categories: Exploits and vulnerabilities Categories: News Tags: Exchange Tags: ProxyShell Tags: remote PowerShell Tags: web shell Tags: CVE-2022-41040 Tags: CVE-2022-41082 Tags: SSRF Tags: RCE Two ProxyShell-like vulnerabilities are being used to exploit Microsoft Exchange Servers (Read more...) The post Two new Exchange Server zero-days in the wild appeared first on Malwarebytes Labs.
Microsoft officially disclosed it investigating two zero-day security vulnerabilities impacting Exchange Server 2013, 2016, and 2019 following reports of in-the-wild exploitation. "The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is
Microsoft officially disclosed it investigating two zero-day security vulnerabilities impacting Exchange Server 2013, 2016, and 2019 following reports of in-the-wild exploitation. "The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is
November 8, 2022 update - Microsoft released security updates for CVE-2022-41040 and CVE-2022-41082. We recommend that customers protect their organizations by applying the updates immediately to affected systems. The options described in the Mitigations section are no longer recommended. For more information, review the Exchange Team blog. Summary Summary On November 8 Microsoft released security updates for two zero-day vulnerabilities affecting Microsoft Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019.
Summary Microsoft is investigating two reported zero-day vulnerabilities affecting Microsoft Exchange Server 2013, 2016, and 2019. The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is accessible to the attacker. At this time, Microsoft is aware of limited … Customer Guidance for Reported Zero-day Vulnerabilities in Microsoft Exchange Server Read More »