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zdiAnonymousZDI-21-1553
HistoryDec 21, 2021 - 12:00 a.m.

Microsoft Azure Defender for IoT Improper Certificate Validation Authentication Bypass Vulnerability

2021-12-2100:00:00
Anonymous
www.zerodayinitiative.com
5

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.041 Low

EPSS

Percentile

92.1%

This vulnerability allows remote attackers to bypass authentication on affected installations of Microsoft Azure Defender for IoT console and sensor appliances. Authentication is not required to exploit this vulnerability. The specific flaw exists within the password reset mechanism. The issue results from the lack of proper validation of a certificate chain. An attacker can leverage this vulnerability to bypass authentication on the system.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.041 Low

EPSS

Percentile

92.1%