SB2023021436 - Multiple vulnerabilities in Microsoft Protected Extensible Authentication Protocol
Published: February 14, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2023-21701)
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 Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the system and perform a denial of service (DoS) attack.
2) Out-of-bounds read (CVE-ID: CVE-2023-21691)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the affected system and read parts of heap memory from a privileged process running on the server.
3) Input validation error (CVE-ID: CVE-2023-21692)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the system and execute arbitrary code.
Successful exploitation of the vulnerability requires that NPS is running on the Windows Server and has a network policy configured that allows PEAP.
4) Input validation error (CVE-ID: CVE-2023-21690)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the system and execute arbitrary code.
Successful exploitation of the vulnerability requires that NPS is running on the Windows Server and has a network policy configured that allows PEAP.
5) Input validation error (CVE-ID: CVE-2023-21689)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Protected Extensible Authentication Protocol (PEAP). A remote attacker can send specially crafted PEAP packets to the system and execute arbitrary code.
Successful exploitation of the vulnerability requires that NPS is running on the Windows Server and has a network policy configured that allows PEAP.
6) Input validation error (CVE-ID: CVE-2023-21695)
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input within Microsoft Protected Extensible Authentication Protocol (PEAP). A remote user can send specially crafted PEAP packets to the system and execute arbitrary code.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21701
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21691
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21692
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21690
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21689
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21695