Headline
Microsoft Patch Tuesday February 2023: Win Graphics RCE, Edge RCE, Publisher SFB, CLFS EoP, Exchange RCEs, Word RCE, HoloLens1
Hello everyone! This episode will be about Microsoft Patch Tuesday for February 2023, including vulnerabilities that were added between January and February Patch Tuesdays. Alternative video link (for Russia): https://vk.com/video-149273431_456239118 This month I decided to change the format a bit. Now I share my impression of Microsoft Patch Tuesday on the same Patch Tuesday day […]
Hello everyone! This episode will be about Microsoft Patch Tuesday for February 2023, including vulnerabilities that were added between January and February Patch Tuesdays.
Alternative video link (for Russia): https://vk.com/video-149273431_456239118
This month I decided to change the format a bit. Now I share my impression of Microsoft Patch Tuesday on the same Patch Tuesday day in my main telegram channel avleonovcom and my second russian telegram channel avleonovrus. You can also find a draft of the Vulristics report there. So please subscribe. And the full blog post/video is published with a delay. And, in fact, this is it.
As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. I took the comments about the vulnerabilities from the Qualys, Nessus, Rapid7, ZDI Patch Tuesday reviews.
$ cat comments_links.txt
ZDI|The February 2023 Security Update Overview|https://www.thezdi.com/blog/2023/2/14/the-february-2023-security-update-overview
KrebsOnSecurity|Microsoft Patch Tuesday, February 2023 Edition|https://krebsonsecurity.com/2023/02/microsoft-patch-tuesday-february-2023-edition/
Qualys|The February 2023 Patch Tuesday Security Update Review|https://blog.qualys.com/vulnerabilities-threat-research/patch-tuesday/2023/02/14/the-february-2023-patch-tuesday-security-update-review
$ python3 vulristics.py --report-type "ms_patch_tuesday_extended" --mspt-year 2023 --mspt-month "February" --mspt-comments-links-path "comments_links.txt" --rewrite-flag "True"
...
Creating Patch Tuesday profile...
MS PT Year: 2023
MS PT Month: February
MS PT Date: 2023-02-14
MS PT CVEs found: 78
Ext MS PT Date from: 2023-01-11
Ext MS PT Date to: 2023-02-13
Ext MS PT CVEs found: 34
ALL MS PT CVEs: 112
- All vulnerabilities: 112
- Urgent: 1
- Critical: 3
- High: 53
- Medium: 55
- Low: 0
Vulnerabilities with signs of exploitation in the wild
- Remote Code Execution – Windows Graphics Component (CVE-2023-21823) seems the most critical. The vulnerability gives an attacker SYSTEM privileges when exploited. To exploit this, attackers use specially crafted Microsoft OneNote files (OneNote is a digital note-taking app). Malicious files can be delivered as email attachments. Exploitation in the wild is mentioned on Vulners (cisa_kev object), AttackerKB, Microsoft websites. The exploit’s existence is mentioned in Microsoft CVSS Temporal Score (Autonomous Exploit). Interestingly, ZDI classified this vulnerability as EoP and did not include it in their review. Apparently MS changed the type of vulnerability before the release.
- Memory Corruption – Microsoft Edge (CVE-2023-0129). Exploitation in the wild is mentioned on AttackerKB website. Vulnerabilities that are responsible for initial access with the network access vector and external unprivileged attacker model should be fixed quickly. Such vulnerabilities allow infiltrating a company without any privileges and special access (only user interaction).
- Security Feature Bypass – Microsoft Publisher (CVE-2023-21715). Microsoft Publisher is a desktop publishing application used for creating a wide variety of publications, from business cards and newsletters to calendars and greeting cards. Successful exploitation of CVE-2023-21715 allows an attacker to bypass Office macro defenses using a specially-crafted document and run code which would otherwise be blocked by policy. Only Publisher installations delivered as part of Microsoft 365 Apps for Enterprise are listed as affected. Exploitation in the wild is mentioned on Vulners (cisa_kev object), AttackerKB, Microsoft websites.
- Elevation of Privilege – Windows Common Log File System Driver (CVE-2023-23376). The Common Log File System (CLFS) is a general-purpose logging service that can be used by software clients running in user-mode or kernel-mode. Microsoft does note that the vulnerability would allow an attacker to exploit code as SYSTEM, which would allow them to completely take over a target. This is likely being chained with an RCE bug to spread malware or ransomware. Exploitation in the wild is mentioned on Vulners (cisa_kev object), AttackerKB, Microsoft websites.
Other vulnerabilities without exploits and signs of exploitation in wild
- Remote Code Execution – Microsoft Exchange (CVE-2023-21529, CVE-2023-21706, CVE-2023-21707, CVE-2023-21710). Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. The vulnerabilities allow a remote attacker to execute arbitrary code on a vulnerable server, via a network call. CVE-2023-21529 results from an incomplete fix in Exchange from previous Patch Tuesday. While this vulnerability does require authentication, it allows any user with access to the Exchange PowerShell backend to take over an Exchange server. So far, there are no signs of these vulnerabilities being exploited in the wild.
- Remote Code Execution – Microsoft Word (CVE-2023-21716). Although the vulnerable component is not specified, Microsoft states that the Outlook Preview Pane is an attack vector. The vulnerability can be exploited by an unauthenticated attacker sending an email with a rich text format (RTF) payload, which when opened, allows for command execution. When paired with a privilege escalation bug, an attacker could completely compromise a target. There are no signs of this vulnerability being exploited in the wild.
A funny one
Information Disclosure – Microsoft HoloLens 1 (CVE-2019-15126). In fact, this is an old Broadcom vulnerability with a bunch of exploits. Microsoft HoloLens (1st gen) was the world’s first fully untethered holographic computer. It was released in March 2016. An issue was discovered on Broadcom Wi-Fi client devices. Specifically timed and handcrafted traffic can cause internal errors (related to state transitions) in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic. Broadcom no longer supports their hardware on any Windows platforms. As such there is no security update available to address this vulnerability. But there are some security recommendations.
Full Vulristics report: ms_patch_tuesday_february2023
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.
А всех русскоязычных я приглашаю в ещё один телеграмм канал @avleonovrus, первым делом теперь пишу туда.
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Categories: Exploits and vulnerabilities Categories: News Tags: patch Tuesday Tags: Microsoft Tags: Apple Tags: Adobe Tags: SAP Tags: Citrix Tags: Cisco Tags: Atlassian Tags: Google Tags: Mozilla Tags: Forta Tags: OpenSSH Tags: CVE-2023-21823 Tags: CVE-2023-21715 Tags: OneNote Tags: CVE-2023-23376 Tags: CVE-2023-21706 Tags: CVE-2023-21707 Tags: CVE-2023-21529 Tags: CVE-2023-21716 Tags: CVE-2023-23378 Tags: CVE-2023-22501 Tags: CVE-2023-24486 Tags: CVE-2023-24484 Tags: CVE-2023-24484 Tags: CVE-2023-24483 Tags: CVE-2023-25136 Tags: GoAnywhere Microsoft has released updates to patch three zero-days and lots of other vulnerabilities and so have several other vendors (Read more...) The post Update now! February's Patch Tuesday tackles three zero-days appeared first on Malwarebytes Labs.
Categories: Exploits and vulnerabilities Categories: News Tags: patch Tuesday Tags: Microsoft Tags: Apple Tags: Adobe Tags: SAP Tags: Citrix Tags: Cisco Tags: Atlassian Tags: Google Tags: Mozilla Tags: Forta Tags: OpenSSH Tags: CVE-2023-21823 Tags: CVE-2023-21715 Tags: OneNote Tags: CVE-2023-23376 Tags: CVE-2023-21706 Tags: CVE-2023-21707 Tags: CVE-2023-21529 Tags: CVE-2023-21716 Tags: CVE-2023-23378 Tags: CVE-2023-22501 Tags: CVE-2023-24486 Tags: CVE-2023-24484 Tags: CVE-2023-24484 Tags: CVE-2023-24483 Tags: CVE-2023-25136 Tags: GoAnywhere Microsoft has released updates to patch three zero-days and lots of other vulnerabilities and so have several other vendors (Read more...) The post Update now! February's Patch Tuesday tackles three zero-days appeared first on Malwarebytes Labs.
Categories: Exploits and vulnerabilities Categories: News Tags: patch Tuesday Tags: Microsoft Tags: Apple Tags: Adobe Tags: SAP Tags: Citrix Tags: Cisco Tags: Atlassian Tags: Google Tags: Mozilla Tags: Forta Tags: OpenSSH Tags: CVE-2023-21823 Tags: CVE-2023-21715 Tags: OneNote Tags: CVE-2023-23376 Tags: CVE-2023-21706 Tags: CVE-2023-21707 Tags: CVE-2023-21529 Tags: CVE-2023-21716 Tags: CVE-2023-23378 Tags: CVE-2023-22501 Tags: CVE-2023-24486 Tags: CVE-2023-24484 Tags: CVE-2023-24484 Tags: CVE-2023-24483 Tags: CVE-2023-25136 Tags: GoAnywhere Microsoft has released updates to patch three zero-days and lots of other vulnerabilities and so have several other vendors (Read more...) The post Update now! February's Patch Tuesday tackles three zero-days appeared first on Malwarebytes Labs.
Categories: Exploits and vulnerabilities Categories: News Tags: patch Tuesday Tags: Microsoft Tags: Apple Tags: Adobe Tags: SAP Tags: Citrix Tags: Cisco Tags: Atlassian Tags: Google Tags: Mozilla Tags: Forta Tags: OpenSSH Tags: CVE-2023-21823 Tags: CVE-2023-21715 Tags: OneNote Tags: CVE-2023-23376 Tags: CVE-2023-21706 Tags: CVE-2023-21707 Tags: CVE-2023-21529 Tags: CVE-2023-21716 Tags: CVE-2023-23378 Tags: CVE-2023-22501 Tags: CVE-2023-24486 Tags: CVE-2023-24484 Tags: CVE-2023-24484 Tags: CVE-2023-24483 Tags: CVE-2023-25136 Tags: GoAnywhere Microsoft has released updates to patch three zero-days and lots of other vulnerabilities and so have several other vendors (Read more...) The post Update now! February's Patch Tuesday tackles three zero-days appeared first on Malwarebytes Labs.
Categories: Exploits and vulnerabilities Categories: News Tags: patch Tuesday Tags: Microsoft Tags: Apple Tags: Adobe Tags: SAP Tags: Citrix Tags: Cisco Tags: Atlassian Tags: Google Tags: Mozilla Tags: Forta Tags: OpenSSH Tags: CVE-2023-21823 Tags: CVE-2023-21715 Tags: OneNote Tags: CVE-2023-23376 Tags: CVE-2023-21706 Tags: CVE-2023-21707 Tags: CVE-2023-21529 Tags: CVE-2023-21716 Tags: CVE-2023-23378 Tags: CVE-2023-22501 Tags: CVE-2023-24486 Tags: CVE-2023-24484 Tags: CVE-2023-24484 Tags: CVE-2023-24483 Tags: CVE-2023-25136 Tags: GoAnywhere Microsoft has released updates to patch three zero-days and lots of other vulnerabilities and so have several other vendors (Read more...) The post Update now! February's Patch Tuesday tackles three zero-days appeared first on Malwarebytes Labs.
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78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
78 new CVEs patched in this month's batch — nearly half of which are remotely executable and three of which attackers already are exploiting.
Windows Graphics Component Remote Code Execution Vulnerability
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year's special Valentine's Day Patch Tuesday includes fixes for a whopping three different "zero-day" vulnerabilities that are already being used in active attacks.
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Publisher Security Features Bypass Vulnerability
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.” According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday
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