SB2023101085 - Multiple vulnerabilities in Microsoft Skype for Business

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2023-36786)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Skype for Business. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.

2) Input validation error (CVE-ID: CVE-2023-36780)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Skype for Business. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.

3) Input validation error (CVE-ID: CVE-2023-36789)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Skype for Business in the "NT AUTHORITYNetwork Service". A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36786
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36780
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36789