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    Rewterz Threat Advisory –Multiple Microsoft Office Vulnerabilities

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    March 17, 2023
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    Rewterz Threat Alert – Chaos Ransomware – Active IOCs
    Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Advisory – Multiple Adobe ColdFusion Vulnerabilities
    Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Ursnif Banking Trojan aka Gozi – Active IOCs
    Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]

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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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    xdrLogo
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    Read More about XDR

    Platform

    • Rewterz XDR
    • Rewterz Defense
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    Rewterz Threat Advisory –Multiple Microsoft Office Vulnerabilities

    Managed Security Services

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

    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

    Assess

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

    Transform

    • SOC Consultancy
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    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Chaos Ransomware – Active IOCs
    Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Advisory – Multiple Adobe ColdFusion Vulnerabilities
    Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Ursnif Banking Trojan aka Gozi – Active IOCs
    Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]

    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 Microsoft Exchange Server Vulnerabilities
January 11, 2023
Rewterz
Rewterz Threat Advisory – Multiple Microsoft Azure Vulnerabilities
January 11, 2023

Rewterz Threat Advisory –Multiple Microsoft Office Vulnerabilities

January 11, 2023

Severity

High

Analysis Summary

CVE-2023-21736 CVSS:7.8

Microsoft Office Visio could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2023-21737 CVSS:7.8

Microsoft Office Visio could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2023-21734 CVSS:7.8

Microsoft Office could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2023-21738 CVSS:7.1

Microsoft Office Visio could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2023-21741 CVSS:7.1

Microsoft Office Visio could allow a remote authenticated attacker to obtain sensitive information. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from heap memory and then use this information to launch further attacks against the affected system.

CVE-2023-21735 CVSS:7.8

Microsoft Office could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

  • Code Execution
  • Information Disclosure

Indicators Of Compromise

CVE

  • CVE-2023-21736
  • CVE-2023-21737
  • CVE-2023-21734
  • CVE-2023-21738
  • CVE-2023-21741
  • CVE-2023-21735

Affected Vendors

Microsoft

Affected Products

  • Microsoft Visio 2013 SP1 x32
  • Microsoft Visio 2013 SP1 x64
  • Microsoft Visio 2016 x32
  • Microsoft Visio 2016 x64
  • Microsoft Office 2019 Mac
  • Microsoft Office LTSC for Mac 2021
  • Microsoft Office 2019 x32
  • Microsoft Office 2019 x64
  • Microsoft Office LTSC 2021 x64
  • Microsoft Office LTSC 2021 x32
  • Microsoft 365 Apps for Enterprise x32
  • Microsoft 365 Apps for Enterprise x64

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-2023-21736

CVE-2023-21737

CVE-2023-21734

CVE-2023-21738

CVE-2023-21741

CVE-2023-21735

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
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Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
  • Press Releases

Connect With Us

  • Contact
  • Careers
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