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Pedro Ribeiro (@pedrib1337 | [email protected]) from Agile Information SecurityZDI-22-506

HistoryMar 11, 2022 - 12:00 a.m.

Cisco Nexus Dashboard Fabric Controller AMF Deserialization of Untrusted Data Remote Code Execution Vulnerability

2022-03-1100:00:00

Pedro Ribeiro (@pedrib1337 | [email protected]) from Agile Information Security

www.zerodayinitiative.com

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

0.074 Low

EPSS

Percentile

94.0%

JSON

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Nexus Dashboard Fabric Controller. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the AMF protocol. Crafted data in an AMF protocol message can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the fmserver user.