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Rewterz Threat Advisory – Multiple Microsoft Skype Vulnerabilities

Severity

High

Analysis Summary

CVE-2023-36789 CVSS:7.2

Microsoft Skype for Business could allow a remote authenticated attacker to gain elevated privileges on the system. By sending a specially crafted request, an attacker could exploit this vulnerability to escalate privileges.

CVE-2023-36786 CVSS:7.2

Microsoft Skype for Business could allow a remote authenticated attacker to execute arbitrary code on the system. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2023-36780 CVSS:7.2

Microsoft Skype for Business could allow a remote authenticated attacker to execute arbitrary code on the system. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

  • Privilege Escalation 
  • Gain Access

Indicators Of Compromise

CVE

  • CVE-2023-36789
  • CVE-2023-36786
  • CVE-2023-36780

Affected Vendors

Microsoft

Affected Products

  • Microsoft Skype for Business Server 2015 CU13
  • Microsoft Skype for Business Server 2019 CU7

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-2023-36789

CVE-2023-36786

CVE-2023-36780