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    Rewterz Threat Advisory – Multiple Microsoft Kernel Vulnerabilities

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    March 22, 2023
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    Rewterz Threat Alert – Mekotio Banking Trojan aka Melcoz – Active IOCs
    Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Update – Cyber Threat Intelligence Advisory – 23rd March Pakistan Day
    Analysis Summary Overview – 23rd Mar – A Big Day –  As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Advisory -Multiple Jenkins Products Vulnerabilities
    Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]

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    Annual Threat Intelligence Report 2022
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    Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.

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    Rewterz Threat Advisory – Multiple Microsoft Kernel Vulnerabilities

    Managed Security Services

    • Managed Security Monitoring
    • Remote SOC
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    Managed Penetration Testing

    Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.

  • Services

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    March 22, 2023
    March 22, 2023
    Rewterz Threat Alert – Mekotio Banking Trojan aka Melcoz – Active IOCs
    Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Update – Cyber Threat Intelligence Advisory – 23rd March Pakistan Day
    Analysis Summary Overview – 23rd Mar – A Big Day –  As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Advisory -Multiple Jenkins Products Vulnerabilities
    Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]

    Threat Insights

    16
    pdf-file (1)
    Annual Threat Intelligence Report 2022
    • Threat Advisories
    • Monthly Threat Insights
    • Threat Intelligence Reports
  • Why Rewterz?

    About Us

    Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.

    Read More

    play_btn_Smallplay_btn_hover_Small
    leadership

    Our Leadership

    Our leadership team brings together years of knowledge and experience in cybersecurity to drive our company's mission and vision. Our team is passionate about delivering high-quality products and services, leading by example and assisting our clients in securing their organization’s environment.
    help

    CSR

    At Rewterz, we believe that businesses have a responsibility to impact positively and contribute to the well-being of our communities as well as the planet. That's why we are committed to operating in a socially responsible and sustainable way.

    Connect with Us

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Rewterz
Rewterz Threat Advisory – Multiple Windows Cryptographic Vulnerabilities
January 17, 2023
Rewterz
Rewterz Threat Alert – Phobos Ransomware – Active IOCs
January 17, 2023

Rewterz Threat Advisory – Multiple Microsoft Kernel Vulnerabilities

January 17, 2023

Severity

Medium

Analysis Summary

CVE-2023-21747 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21773 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21753 CVSS:5.5

Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the Kernel component. By executing a specially-crafted program, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory from a user mode process and then use this information to launch further attacks against the affected system.

CVE-2023-21776 CVSS:5.5

Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the Kernel component. By executing a specially-crafted program, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory and then use this information to launch further attacks against the affected system.

CVE-2023-21750 CVSS:7.1

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21675 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21774 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21749 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21755 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

CVE-2023-21772 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.

Impact

  • Privilege Escalation
  • Information Disclosure

Indicators Of Compromise

CVE

  • CVE-2023-21747
  • CVE-2023-21773
  • CVE-2023-21753
  • CVE-2023-21776
  • CVE-2023-21750
  • CVE-2023-21675
  • CVE-2023-21774
  • CVE-2023-21749
  • CVE-2023-21755
  • CVE-2023-21772

Affected Vendors

Microsoft

Affected Products

  • Microsoft Windows 7 SP1 x32
  • Microsoft Windows 7 SP1 x64
  • Microsoft Windows Server 2012
  • Microsoft Windows 8.1 x32
  • Microsoft Windows 8.1 x64
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows RT 8.1Microsoft Windows 10 x32
  • Microsoft Windows 10 x64
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2019
  • Microsoft Windows 10 1809 for x64-based Systems
  • Microsoft Windows 10 1809 for 32-bit Systems
  • Microsoft Windows 10 1809 for ARM64-based Systems
  • Microsoft Windows 10 1607 for 32-bit Systems
  • Microsoft Windows 10 1607 for x64-based Systems
  • Microsoft Windows 10 20H2 for 32-bit Systems
  • Microsoft Windows 10 20H2 for ARM64-based Systems
  • Microsoft Windows 10 20H2 for x64-based Systems
  • Microsoft Windows Server (Server Core installation) 2019
  • Microsoft Windows Server (Server Core installation) 2016
  • Microsoft Windows Server for X64-based systems 2008 R2 SP1
  • Microsoft Windows Server for X64-based systems (Server Core installation) 2008 SP2
  • Microsoft Windows Server for 32-bit systems (Server Core installation) 2008 SP2
  • Microsoft Windows Server for 32-bit systems 2008 SP2Microsoft Windows Server 2022
  • Microsoft Windows Server (Server Core installation) 2022
  • Microsoft Windows Server for X64-based systems 2008 SP2
  • Microsoft Windows 10 21H2 for 32-bit Systems
  • Microsoft Windows 10 21H2 for ARM64-based Systems
  • Microsoft Windows 10 21H2 for x64-based Systems
  • Microsoft Windows Server 2022 Azure Edition Core Hotpatch
  • Microsoft Windows 11 22H2 for ARM64-based Systems
  • Microsoft Windows 11 22H2 for x64-based Systems
  • Microsoft Windows 10 22H2 for 32-bit Systems
  • Microsoft Windows 10 22H2 for ARM64-based Systems
  • Microsoft Windows 10 22H2 for x64-based Systems
  • Microsoft Windows 11 21H2 for ARM64-based Systems
  • Microsoft Windows 11 21H2 for x64-based Systems
  • Microsoft Windows Server (Server Core installation) 2012 R2
  • Microsoft Windows Server (Server Core installation) 2012
  • Microsoft Windows Server for X64-based systems (Server Core installation) 2008 R2
  • Microsoft Windows Server for X64-based systems (Server Core installation) 2008 R2 SP1

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

CVE-2023-21747

CVE-2023-21773

CVE-2023-21753

CVE-2023-21776

CVE-2023-21750

CVE-2023-21675

CVE-2023-21774

CVE-2023-21749

CVE-2023-21755

CVE-2023-21772

Platform

  • Rewterz XDR
  • Rewterz Defense
  • Rewterz Threat Intelligence

Managed Security Services

  • Managed Security Monitoring
  • Remote SOC
  • Onsite SOC
  • Hybrid SOC

Assess

  • Compromise Assessment
  • APT Assessment
  • Penetration Testing
  • Architecture Design & Review
  • Red Team Assessment
  • Purple Team Assessment
  • Social Engineering
  • Source Code Review

Transform

  • SOC Consultancy
  • SOC Maturity Assessment
  • SOC Model Evaluation
  • SOC Gap Analysis
  • SIEM Gap Analysis
  • SIEM Optimization
  • SOC Content Pack

Train

  • Simulated Cyber Attack Exercise
  • Tabletop Exercise
  • Security Awareness and Training

Respond

  • Incident Analysis
  • Incident Response

Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
  • Press Releases

Connect With Us

  • Contact
  • Careers
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