SB2023021436 - Multiple vulnerabilities in Microsoft Protected Extensible Authentication Protocol

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Main Vulnerability Database SB2023021436

SB2023021436 - Multiple vulnerabilities in Microsoft Protected Extensible Authentication Protocol

Published: February 14, 2023

Security Bulletin ID SB2023021436
CSH Severity
High
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2023-21701)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 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)

CWE-ID: CWE-125 - Out-of-bounds read

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


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)

CWE-ID: CWE-20 - Improper input validation

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


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)

CWE-ID: CWE-20 - Improper input validation

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


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)

CWE-ID: CWE-20 - Improper input validation

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


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)

CWE-ID: CWE-20 - Improper input validation

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


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