SB2022080940 - Multiple vulnerabilities in Microsoft Windows Local Security Authority (LSA)

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2022-35759)

CWE-ID: CWE-20 - Improper input validation

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

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the Windows Local Security Authority (LSA). A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-34706)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

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

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the Windows Local Security Authority (LSA), which leads to security restrictions bypass and privilege escalation.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-35759
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34706